A sneak peek behind the scenes tonight. First heres the nightline 5. If your family outing is magical for all the wrong reasons, you may be muddling through allergies. Try zer tick, different from claritin because it starts working faster on the first day you take it. Try zyrtec, muddle no more. How much protein does your dog food have . Purina one true instinct with real venison and turkey has 30 protein. Support your active dogs whole body health with purina one. Number one in just 60 good evening. As we witnessed another emotional climax of the bachelor tonight we begin here with a story about a very different kind of search for love. Online dating has become increasingly sophisticated. You can now filter by age, gend gender, eye color, body weight, and race. But has a new site called wherewhitepeoplemeet crossed the line . Heres abcs Gloria Riviera. Youre the person i want to spend my whole life with. Reporter while the bachelor finale makes it look like a fairy tale on tv lauren. Will you marry me . Yes. Reporter for many, finding love online can easily turn into a nightmare. This is my profile. Reporter just ask dawn frasier. Ive had horrible, ridiculously bad dates. Reporter getting someone to respond to her messages, let alone go on a date, has proven to be a challenge. Some people do distinguish that they only want a white person, or they only want asian. Reporter shes one of many women who say winning the game of Online Dating may all come down to the color of your skin. I know as a black woman in this Online Dating world, its going to mean that im going to have to contact multiple many more people in order to get a typical response that a person not of color might get on a normal day. Reporter in fact, the dating giant ok cupid says their numbers indicate male users were less likely to message black women and women were more likely to pass on asian, black, and la toon know men. But theres a new site that has many questioning how exact preferences can be. Wherewhitepeoplemeet. Com. The first page is pretty much like every other dating website out there. Reporter sam and jody russell are the masterminds behind the twomonthold dating site, launching the business with this billboard in their hometown of salt lake city, utah a region mor than 90 white. Where white people meet, the name alone, did you expect a little bit of backlash . We counted on that. That was part of our marketing plan. You knew it would be controversial . We knew it had to be. Reporter the billboard causing such offense the city made them take it down. I thought white people met everywhere. Reporter the first question was, is this for real . I wanted a gal who shares my passion for celine dion. Reporter the site may have been the butt of many jokes i thought we already had a place where white people meet, isnt that the bachelor . Reporter it encapsulated the controversy surrounding race and Online Dating. As the creators of this site you guys have been personally accused of being racist. Were not racist at all, without question. Our lifestyle shows it. The things we do, the people we associate with, the way we conduct ourselves each and every day proves it. Reporter this say the site does too. Users are not required to check a white racial preference. Nor are they kicked off for not being white. Even though the name would suggest otherwise. But in the over 1 billion industry, being very specific is becoming the norm. Nowadays sites are going the extra mile, allowing users to filter data options according to religion, height, body size, and race. United in faith and purpose. Reporter sites like christian mingle, our time for older daters, and blackpeoplemeet. Com. Reporter these ads is how the idea came to him. What do you think people would be surprised to know about you, someone whos created a site called wherewhitepeoplemeet . My best friend dprog up was hispanic. I dated a black girl for while. We lived together a few months. This is when i was younger. Ive got a lot of great black friends. So i think it does surprise people. I think a lot of people, when we first started the site, figured it was going to be some sort of a forum for white spremmists. Are you saying its taken someone with a reputation for someone being open, accepting, to start a conversation like this . Maybe. Its a perfect platform. Maybe so. What do you hope the website does . For the conversation on racial equality . It maybe gets people talking. We realize that we dont have to get offended every time we hear the word white or we hear the word black. Reporter recent data shows 54 of millennials are dating outside their race. 88 saying theyd be open to it. Put critics worry a site like this creates a forum for racial prejudice. In the terms it says you cannot do anything that what . Correct, promotes racism, bigotry, hatred, or physical harm of any kind against any group or individual. Under that banner declarations of affiliation with white supremacist groups would fall under that . Yes. Absolutely. And or some sort of a black action dreamist group. Were not going to allow it either way. What are we looking at here . Will you delete that . I go right here reporter their son holden, high school senior, is responsible for monitoring the site. Its been like managing i go to high school every day. Reporter he goes through messages one by one, accepting and deleting those that have been flagged as inappropriate. Tell me about some of the things youve had to take down. Theres been a few profiles of people who just go in and make a fake profile, like blackface, a picture of adolf hitler. Alarming stuff . Alarming stuff, or pornographic images and stuff ive had to take off. Reporter comments on the controversy stay in. I love the controversy. I like the conversation as a whole. I dont have an issue with it at all. And im glad i can be a part of it, honestly. At 18, do you think youre prepared to do that . Yeah, yeah. I kind of have like i said, that entrepreneurial spirit. So ive always this isnt about just business. Its also about a National Conversation on racial discrimination. Yeah. Its so appalling. Because the implication of where white pool meet is white people are having trouble meeting, which is not true. The world is our [ bleep ] oyster. Reporter emma is founder of the service the dating ring. She says the majority of her clients have a racial preference, more often than not, its white. People feel its okay to say, i only want to date white people. You would never be able to say, i only want to hire white people. Reporter an issue she says goes beyond dating sites. If theres any experience where people are making negative generalizations about a huge swath of people based on the color of their skin, then we need to be talking about it. Reporter a problem the rustles are now having to address. Its better to talk about it than leave it unsaid . By far. Sure, when you dont talk about things weve gone a couple of radio shows where they would colored radio shows and they love sam. And they are saying thank you. Do you think its an opportunity for people to become educated . Listening to you just now talk about colored radio programs, that is a term that today the word colored alone is something people would bristle at. And they do. So my question is, do you think that theres something to be gained from opening the conversation around something as simple as a dating app that can help its really for jody, i want to get her take on that. I think what it does, almost takes the handcuffs off. In a small way. If were the people that start the ball rolling in talking about it and getting it so its not a big deal, i think its huge. A really key question that you want to ask yourself is, why is it that race is so important to you . When you begin to examine why it is, i believe that youll find that its not necessarily race thats important to you. But it could be values that are important to you. Reporter dawn is open to meeting men outside her race but she says in todays world, if going on a date is the goal, a site targeting black singles just might be her best bet in finding the perfect match. I think that the value is that you actually are going to get some responses. You are going to get some type of traction. Without feeling like the stigma of being a person of color. Reporter for nightline, Gloria Riviera in salt lake city, utah. Up next, well take you inside trump world. The rhetoric, the violence, the pepper spray, and the frantic efforts tonight to stop the trump juggernaut on the eve of potentially decisive primaries. But first an exclusive inside look at the making of the movie that took the galaxy by storm. A documentary taking fans behind the scenes of star wars the force awakens previewed today for the first time. This documentary, which will be available on the star wars bluray which comes out april 5th, reveals how the franchises new villain adam driver got into costume and into character at the same time. Putting it on, it was like such a an event that was by the time we started shooting i felt totally ready. And how Harrison Ford was all smiles, even when choreographing the leadup to that climactic heartbreaking scene. It was the scene i think that terrified me the most. His destiny is resolved in a powerful and effective way. Man. Woman. Or where youre from. City. Country. Were just everyday people fighting high blood sugar. 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Imagine where it will take you. We learn tonight donald trump will not face charges of inciting a riot in North Carolina where a black protester was suckerpunched by a white trump supporter. But that has not stopped trumps rivals from calling him out for what this say is dangerous and incendiary rhetoric. On the eve of potentially decisive primaries, abcs david wright has been traveling with trump. Reporter tonight on the campaign trail, anger management. Practically every stop. Usa, usa usa, usa reporter the candidate loses his patience but keeps his cool. Let him go. Hell go back home to mom and shell be angry at him. Its so good to be here. Reporter joined in tampa by americas most famous political hockey mom who cried foul. What we dont have time for is all that petty, punkass little thuggery stuff thats been going on with these quoteunquote protesters and the media being on the thugs side . What the heck are you guys thinking, media . It doesnt make sense. Reporter as the Trump Campaign helps stoke americas outrage get her out of here. Reporter protesters have always been part of the cost of doing business. Get her out. Get him out of. Get him out of here. Get him out, get him out of here. Reporter that catch phrase is the candidates version of what the apprentice used to say. Youre fired. Youre fired. Youre fired. Reporter different trump reality show, same tried and true trump brand. Money money money reporter in that way the protesters play right into his hands. He pushes it up a little bit more, and weve seen him exercise this. It used to be simple dog whistles. Now hes being more blatant. That has been part of his schtick, if you will. Reporter kansas city. Forget occupy wall street. Might as well have been occupy donald trump. Outside the event, along main street, police built a kansas city version of trumps wall. On one side youve got a lot of Bernie Sanders fans. The other side, a lot of donald trump fans. And a lot of cops in between. Push it back reporter all the divisions trump rails about suddenly conjured up on the streets of an american city. The cops used horses for crowd control. And when that didnt work, they brought out the pepper spray. I got a mouthful of pepper spray. Youve got to be careful here. Reporter some of the protesters clearly had some experience with pepper spray. The guy right here put your face forward and leave it there. Try to stand up now. Keep your eyes open. Reporter they had gallons of milk handy to neutralize the sting. Gives a whole new meaning to the phrase feeling the bern. The person you had to feel sorry for was the woman selling trump memorabilia. What did people do to you . Spit on us. Reporter nobody was changing anyones mind here. Why do you feel its important to make your voice heard . Were watching the beginning of a new third reich. These people are fascists. Reporter one side calling the other fascists. The other calling them communists. Trump himself has been criticized for egging his supporters on. Do you think he deserves any of the blame . He doesnt egg his supporters on. What it comes down to is people have a personal responsibility to keep themselves under control. Reporter the violence isnt just outside the rallies. Its inside them as well. The trump supporter in fayetteville took it upon himself to cold cock a protester. Then told inside edition the protester got off easy. Yes, he deserved it. The next time we see him, we might have to kill him. Reporter tonight the Trump Campaign issued a statement insisting it is the protesters and agitators who are in vice, not mr. Trump or the campaign. A candidate for president of the United States should condemn violen violence. Not encourage violence. You know, when you are inciting mob violence, which is what trump is doing in those includes, theres a lot of memories that people have. You know, theyre in the dna. People remember mob violence that led to lynching. Reporter trumps rallies are now in danger of becoming flash mobs. On friday forcing trump to cancel his rally in chicago out of safety concerns. Tonights rally will be postponed until another day. Reporter justifiable safety tend concerns julying from the clash between Trump Supporters and demonstrators. Then saturday in dayton, ohio oh, oh reporter a protester leapt over the barricade, rushing the podium. A scary moment for trump and his secret service detail, who quickly tackled the guy and frogmarched him out. Thank you for the warning. I was ready for him but its much easier if crowds do it. Reporter america has been here before but not for a long while. You came for trouble, you got it. Thats right. Reporter 1968, former alabama governor jorge wallageo faced trumplevel protests. Im going to have him taken out of here. Reporter sound familiar . Hes all mouth, get him out. Reporter like trump, George Wallace blasted the media for accusing him of inciting the crowds. I want to tell these people, if you think we are causing is trouble, you ought to head for the holler horns. If i say dont hurt him, the press says, trump isnt as tough as he used to be. George wallace was shot in 1972. So we have a history of these ends usually dont come out well. And usually theres something catastrophic that happens. Reporter its unlikely that any of this anger management problem will hurt trumps results tomorrow. Were going to win, win, win. Were going to win so much youre going to get sick and tired of it. Reporter if youre waiting for him to change his tone, or his message, dont hold your breath. Im david wright for nightline in miami. Up next, something a little different. Why the current president of the United States was freestyle rapping in the rose garden today. Trust number one doctor recommended dulcolax constipated . Use dulcolax tablets for gentle overnight relief suppositories for relief in minutes and stool softeners for comfortable relief of hard stools. Dulcolax, designed for dependable relief wfrom your cold flu. You give them a case of the giggles. Tylenol® cold helps relieve your worst cold flu symptoms. You can give them everything youve got. Tylenol® when i have an asthma attack. I feel scared. Sometimes my parents have to take me to the hospital. I feel like a fish with no water. You know how to react to their asthma attacks. Heres how to prevent them. Call. Visit. Or call your doctor. Because. As he nears the end of his term, president obama appears to be getting looser. Hes been showing more emotion, singing at times. And today freestyling with the star of broadways hamilton. Alexander hamilton may never have been commander in chief. He peaked at secretary of the treasury. First time im thinking past tomorrow reporter the creator and star of the hit show hamilton did meet the current president. And the two treated the world to a freestyle rap in the rose garden. Drop the beat. Reporter covering everything from the constitution constitution im freestyling you know this reporter to the obamas dogs. Sunny and bo the canines you think thats going viral . Thats going viral. Reporter and the president was right, in just one day that video has over 1 million views. How good is that . Pretty good. Thank you for watching abc news tonight. World news now coming up soon with overnight breaking news. Tune into gma first thing in the morning. As always were online on our facebook page. Good night