santorum this far. >> against all odds, we won 11 states. >> reporter: in early debates with his support in single digits he complained about being ignored. >> as i told you when i traveled around iowa, you would see me in your hometown but you probably wouldn't see much of me on television. it's holding true tonight. >> reporter: but he stunned the republican establishment with a victory in iowa. >> game on. >> reporter: famous for speaking his mind, he ignited a series of political fire storms with statements of his deeply conservative beliefs. >> many from the christian faith have said that's okay. contraception is okay. it's not okay. it's a license to do things in the sexual realm that is counter to what... how things are supposed to be. >> reporter: such comments further endear him to many conservatives but may have bruised the party's image among moderate and independent voters especially women. santorum did not mention mitt romney's name today but advisors say they did speak and they are expected to meet soon. but there is still no word, scott, on whether santorum plans to endorse romney. >> pelley: chip, thanks very much. romney today called santorum, quote, an able and worthy competitor who has proven himself to be an important voice in our party. newt gingrich and ron paul said they will stay in the race. gingrich has won two states. paul none. romney has more than half the delegates he needs to clinch the nomination. for his part, the president took his re-election campaign to florida today. he hammered away at what will be one of his main themes against governor romney, that high-income earners should pay more in taxes. norah o'donnell is at the white house tonight. >> reporter: scott, today may mark the first day of the general election campaign in some regards, but the obama campaign team says that little has changed. they say they've been focused like a laser on mitt romney for a long time, even running some television ads against him. today we learned in part how the president is planning to frame this debate. >> we've got to choose which direction we want this country to go in. do we want to keep giving those tax breaks to folks like me who don't need them? or give them to warren buffet. he doesn't need them. or bill gates. he's said i don't need them. or do we want to keep investing in those things that keep our economy growing and keep us secure? that's the choice. >> reporter: here's what the president is talking about. people who make their money from investments like stocks and bonds pay a tax rate of 15%. that's about what mitt romney paid in 2010. billionaire investor warren buffet says it's unfair and wealthier americans should pay more. the president is calling for a tax of 30% on incomes above a million dollars. the senate will consider the so-called buffet rule on monday. mr. obama says making wealthier americans pay more in taxes is an issue of fundamental fairness. >> in this country, prosperity has never trickled down from the wealthy few. prosperity has always come from the bottom up. >> reporter: today in florida, a state he won by less than 3% in 2008, the president finished this policy speech with a campaign-style creche end owe. >> here in america, we look out for one another. here in america, we help each other get ahead. here in america, we have a sense of common purpose. here in america, we can meet any challenge. here in america, we can seize any moment. >> reporter: and president obama is making an increasing number of stops in battle ground states. we counted 51 stops since he announced his campaign. >> pelley: the campaign is on. thanks, norah. on wall street today the sell- off continued as investors worried again about the european debt crisis dumped stocks. the dow lost more than 200 points. that's five straight losing sessions now. so after starting the year with a remarkable advance of 8.6%, the dow has now given nearly half of that back. there was a surprising development late today in the trayvon martin case in sanford, florida. the attorneys representing george zimmerman, the man who shot martin to death, quit today. they laid out a list of complaints that they had with their former client. here's randall pinkston. >> reporter: attorneys craig sonner and hal uhrig say they can no longer speak for george zimmerman. >> we are withdrawing as council for mr. zimmerman. we lost contact with him. up to this point we lost contact every day. he has gone on his own. >> reporter: the two lawyers say the neighborhood watch volunteer who says he shout martin in self-defense has ignored their phone calls and legal advice. >> we had contact as of, i believe, sunday. in the last couple of days he has not returned phone calls or text messages or emails. >> reporter: the attorneys had set up a website to help raise money for zimmerman's defense. but over the weekend, george zimmerman set up his own website. the real george zimmerman. on it, he calls the... the night he shot 17-year-old martin a life-altering event. >> you can't imagine what it's like hiding in a room trying to save your life. perhaps the pressure of that pushed him a little over the edge. he reached a point where he said i'm going to take care of this myself. >> reporter: this dramatic shift comes just one day after special prosecutor angela corey announced she would by- pass a grand jury and decide her is self-whether to bring charges against zimmerman for shooting martin. the attorneys were working to set up a meeting between zimmerman and the investigators. but they were surprised to learn this afternoon that zimmerman had called cory's office himself. >> one of the things every defense attorney tells his client is don't talk to the prosecutors. don't talk to the cops. frankly don't talk to anybody until we get control of the situation and do it true counsel. >> reporter: it's not unusual for a client to change attorneys. we don't know whether george zimmerman has hired a new lawyer. but it is still early in the process. right now, he faces no charges. scott. >> pelley: randall, thanks very much. this was to be the day that the fighting stopped in syria. as you know, a little over a year ago, a freedom movement rose up to overthrow the 41-year dictatorship of the assad family. since then, president bashar al assad has been shelling his own cities killing thousands. he was supposed to pull out his troops today in an agreement he made with the former head of the u.n. kofi annan but that didn't happen. on the border turkey, two influential u.s. senators calls for military intervention. clarissa ward was with them. >> reporter: this is what damascus residents woke up to. tanks rolling through their neighborhoods on the first day of the cease-fire. and shells raining down on the battered city of homs, the center of the resistance, dimming any hopes that the assad regime would honor its commitment to stop the violence. more than 24,000 refugees have fled syria to these camps. thousands crossed in the last week as violence surged in advance of today's deadline. this morning, u.s. senators john mccain and joe lieberman both strong advocates of international intervention visited a syrian refugee camp inside turkey. >> the violence continues in syria today. at what point do we call this plan a failure? >> i think it was a failure from the start. most of us knew because it was no pressure for bashar al assad to actually stop the killing. so we think it's going to require military action on the ground. >> reporter: but so far those countries supporting the syrian rebels have balked at military intervention. >> it's really time to come together and act on behalf of these people who are putting their own lives on the line. no one is really.... >> there's opposition in both parties. americans are war-weary. but presidents lead. if the president of the united states tells the american people about this slaughter, i am confident the american people will support stopping it. >> reporter: the refugees cheered the message. but what they may not know is how unlikely the obama administration is to embrace the idea of military action. >> pelley: clarissa ward is joining us from turkey. clarissa, the obama administration has said repeatedly they don't want to intervene militarily. i wonder what the syrian government is saying about why they missed this deadline. >> syria's foreign minister today said that troops had begun to withdraw from towns and cities but that there couldn't actually be an end to the violence until international monitors arrive... arise inside syria. he said that is syrian regime should have a hand in picking exactly who those monitors would be. essentially trying to renegotiate the terms of this peace plan on the very day that the regime was expected to implement it. >> pelley: clarissa, thank you very much. we asked our research department the remind us of bashar al assad's broken promises. in august, he assured the u.n. that military and police operations had stopped. in november, he agreed to a peace plan with arab leaders. then launched the bombardment of the city of homs, a city of 1.5 million people. and in february, he promised his russian allies that he would stop the violence. facebook opens its pocketbook. why it spent a billion dollars to buy insta-gram. the small town that suffered the most when the titanic sank. and brush fires along the east coast when the "cbs evening coast whif yhe "cbs evening who have used androgel 1%, there's big news. presenting androgel 1.62%. both are used to treat men with low testosterone. androgel 1.62% is from the makers of the number one prescribed testosterone replacement therapy. it raises your testosterone levels, and... is concentrated, so you could use less gel. and with androgel 1.62%, you can save on your monthly prescription. 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[ humming ] will soon be a lot less appealing to a thief. the cell phone carriers reached an agreement today with the fcc to make it impossible to use a stolen phone. they're going to set up a database of i.d.-numbers for every cell phone so the phone can be disabled when they're reported stolen. most cell phones come with a camera these days and instagram has become a popular way to share the photos they take. the application has millions of users and yesterday instagram was snapped up by facebook for a billion dollars. we asked john blackstone to put the deal in focus. >> reporter: with just 13 employees, instagram is run out of a small san francisco office that doesn't even have a sign and so far hasn't made any money. the free app lets 35 million smart phone users quickly transform cell phone pictures into small works of art that can look like something taken many years ago. it's become so popular so quickly that silicon valley venture capitalist says facebook saw it as a threat. >> so facebook very quickly turned potential competitor into an ally. >> and kept it away from its enemies. a bit of art of war here. >> reporter: just last week investors valued instagram at $500 million. then facebook arrived offering double. silicon valley, that may still be a bargain. >> instagram was well on its way to go from 50 million users to 100 million users. nothing was going to stop it. people loved the service. that kind of love for a product is rare. >> reporter: but facebook's big buy is making some instagram users nervous. this woman runs butcher shop creative, a san francisco marketing agency. >> 544 photos. >> reporter: he has hundreds of photos on instagram which is cautious about what he puts on facebook. >> their policy is we own everything. you put up on facebook. we own it. we can do whatever we want with it. your data is not quite your own. >> reporter: worries about how much information face book gathers and what it does with it has led some users to athlete their accounts. but right now this man is sticking with instagram. after all he says it's free. >> they've really created a service without thinking of a revenue model which is pretty amazing that it's gotten where it has. >> reporter: this deal shows how important smart phones have become to the future of the internet. more than a third of american adults now own smart phones. instagram users upload more than five million photos every day. john blackstone, cbs news, san francisco. >> pelley: when the titanic went down, a tiny town may have suffered the greatest loss. we'll take you there next. the way you want? t they can orencia help? could your "i want" become "i can"? talk to your doctor. orencia reduces many ra symptoms like pain, morning stiffness and progression of joint damage. it's helped new ra patients and those not helped enough by other treatments. do not take orencia with another biologic medicine for ra due to an increased risk of serious infection. serious side effects can occur including fatal infections. cases of lymphoma and lung cancer have been reported. tell your doctor if you are prone to or have any infection like an open sore or the flu or a history of copd, a chronic lung disease. orencia may worsen your copd. 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(growl) we invite you to get a free sample and try one on too. very sore looking kinda blistery. it was like a red rash... like somebody had set a bag of hot charcoal on my neck. i was a firefighter for 24 years. but, i have never encountered such a burning sensation until i had the shingles. i remember it well. i was in the back yard doing yard work. i had this irritation going on in my lower neck. i changed shirts because i thought there was something in the collar of the shirt irritating my neck. and i couldn't figure out what was going on. i had no idea it came from chickenpox. i always thought shingles was associated with people... a lot older than myself. i can tell you from experience, it is bad. it's something you never want to encounter. toward europe today when a passenger became ill. the captain still hopes to complete the memorial trip. it was a hundred years ago today that the titanic set off from england. among the 1500 who died when it sank were folks from a small town in ireland, hoping for a new life in america. mark phillips has their story. >> reporter: everything about the titanic was big. biggest ship. biggest disaster. biggest story. but this tragedy also came in small packages. no where was it felt more deeply than here in the remote ireland parish of addergoole, so deeply it was hardly spoken of for almost 100 years. now though, they're rehearsing for a memorial service to commemorate the exact moment the ship went down. 14 people from this tiny place sailed on the titanic. 11 of them died. willie cusack's cousin catherine who left this now ruined farm to head for america was one of them. >> pretty much a big family. you see, they all knew one another. it wasn't just one family. >> reporter: until now, the practice around here hasn't been to try to remember the titanic tragedy but to try to forget it. too painful. too many victims and too small a place. too many families' dreams died on that ship as well. the area, one of ireland's poorest, sent its children to america not just to a new life but to send money back so more could follow. it buried its pain for generations until a new doctor came to town. paul nolan heard stories from elderly patients. >> weeping and gnashing of teeth and wailing and mourning. >> reporter: feeling the need for some form of closure, paul became the driving force behind the addergoole titanic society. it's now produced this memorial park. and new stained glass windows in the town's church, one that celebrates the heroic act of pat canavan holding the rosary beads. he led passengers up from the lower decks so some had a chance of getting into the life boats. tom is pat's nephew. then what happened to him? >> he perished. >> reporter: he stayed on the ship. >> he stayed on the ship. >> reporter: a hundred years later and people here have finally looked into their past and found not just victims they had tried to forget but heroes. mark phillips, cbs news, addergoole, ireland. >> pelley: and that's the "cbs evening news." for tonight. for all of us at cbs news, all around the world, good night. captioning sponsored by cbs captioned by media access group at wgbh now, "entertainment tonight" the most watched entertainment newsmagazine in the world. why kevin costner didn't want to speak at whitney houston's funeral? >> the pressure began to mount and mount. >> the private letters he wrote to whitney during her darkest days. his fears for bobbi kristina and what you never knew about the "the bodyguard." then, alec baldwin tweets about his accused of stalker. did they once have an affair? 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