Newsroom. You say the mayor there in the crowd. Protestors chanting, take a knee, and the mayor did take a knee, pleaded with the group to stay peaceful. San francisco right now. The city leaders are asking people to stay calm tonight. Mayor london breed is there. Asking people, no repeat of last night. The curfew takes effect at 8 00 p. M. And the mayor says she supports the right to protest. And an occur fee goes into effect tonight. And looters and vandals left damage across San Francisco. Christie smith has a look at that. Reporter we are in junior square and you walk around here like some supreme been doing today. They stop win they see scene es like this one. Windows broken, stored looted and the mayor and police chief speaking out about this, saying after the peaceful protest. George floyd in minneapolis. After that was over, things took a turn. Vandals, fires set, busies looted. Today, stores like coach and Louis Vuitton says windows were replaced. They say 25 to 30 businesses were broken into and looted. We have spoken to one man who lives nearby. 20, 25 cars come together at the same time. They all come out together. They just got into that store and started looting them. Myself, i called 911 four times. The Business District says this comes in a time when they were hoping to try to move forward from the series impact of the covid19 restrictions. There were ten felony arrests last night for looting. The mayor and the police chief reminding people that the curfew that begins at 8 00, and the state has authorized Law Enforcement to come to france and back here live, i want to show you what things look like here. Its fairly quiet today. I want to show you what the officers look like here. You can see the gear they have on and this is the situation. Right now, well keep an eye on it for you. Christie smith, nbc bay area news we want to take you up, a choerp, a lot of demonstrations going on in San Francisco right now. A couple hundred people perhaps. It is still early. Maybe more than a few hundred people. Again, like yesterday, a sparse crowd but a long line going one, two three, four, five, six blocks, you put it together, you have people strewn out in a very long stretch of on San Francisco. I want to tell you, so far, the demonstration has been peaceful. Protests in oakland as well. The antipolice terror protect, had a car protest. So many cars showed up that streets were clogged. It brought everything to a stand still. Interstate traffic was tied up as a result as well. The protest remains peaceful. People stayed inside those vehicles. Emeriville is cleaning up after a night of vandalism and looting. Roz plater is live. Reporter im at the retail plaza near christy street here, and everything is boarded. You can see, jamba juice, and wells fargo. The atm screen, smashed with something heavy. Not usable responsibility and a uniform store, starbucks and a phone store. All of it happening now without any protest in sight. One of the most startling scenes was the loolting an at best buy. People were pulling up cars, snatching up electronics, laptops and running off. The mayor says just about every business in the city was hit. Even if they were not looted, they were van lalized, aisles were ransacked. I want to focus on people not being able to get justy in our community. This is really an outcropping of when you dont have protection from the law, then you dont really feel the need to follow it. The mayor said he and the City Council Members came out e early this morning to help with the cleanup. He is hoping the businesses will be able to open back soon. He says there is nothing left. They expect to have a repeat of what happened last night tonight. He will tell you what he said about the Police Officers and the strength. They prioritize people over property. Nbc bay area news. We want to get back up live to San Francisco. The press conference we were talked about. Mayor london breed is talking to the crowd and urging calm. Lets listen in. For those people who are coming to our city for the sole purpose of tearing our city and community, we dont tolerate it. For those who had want to come and protest, you want to call me a name, go ahead. Say what you want to say. But you are not going to destroy our city. You are the not going to destroy our city. And you know, what bothers me the most is the fact there are organized advocators who do it for a living all over the country. They go to various places and they try to excite a riot. Let me tell you. Yesterday, i had protestored. I didnt get to see them but sadly i saw the video. And all white people yelling black lives matter protesting in front of my house. And that didnt bother me as much, going out and they had firework torches in their hands and like what used to happen when the kkk showed up to peoples houses to burn their houses down. Thats tough for me. Because im not the one. Dont bring the fire, because im not the one. London breed with incredibly strong words for people who bring zri lens to the town, and the protestors outside of her house last night. We will have more on that and more from lond don breed. Again, the curfew in San Francisco is 8 00 tonight. And santa rosa, the protested raged for hours. And large groups downtown. Protestors vandalized businesses, started side shows, and the plaza small were shattered. They were able to stop the crowd from going in the mall and doing looting. A lot of tear gas used on demonstrators. And things started finally calming down at 2 00 this morning. In los angeles today, hundreds of people peacefully marching through the streets in protest of the death of george floyd. After nights of violence, leaders are instituting a curfew, from 8 00, until 5 30. And early this morning, Police Continue to arrest people who are looting stores, and in violation of the curfew. Over night, gov flu newsom deployed the National Guard to los angeles. Protestors took to the streets in more than 100 cities. National guard soldiers, police have been overrun trying to control protests from new york to l. A. Anger from the death of george floyd but includes numerous incidents of police brutality. And they tried to get over the barriers just outside the white house. In new york, police cars were set on fire and this incident getting a lot of media attention. We saw a flash of it there, Police Driving into a crowd. Clearly, we need do a full investigation and look at the actions of the officers and see what was done and why it was done. President trump has identified radical groups are inciting the violence, and mayor breed was ref zensing groups from the outside stirring things up. This picture right here, this is Santa Cruz Police chief andrew mills kneeling with protestors yesterday. Taking a knee. Hundreds of people gathered on pacific avenue to honor the memory of george floyd. Chief mills says his department fully supports peaceful protests. He says the death of floyd disturbs him to the core. Its not just santa cruzs police chief. A michigan sheriff showed full support for protestors and speaking out against the officer accused of killing george floyd. Theres 800,000 cops in the united states. And you cant justify that. All the good we do in the community, Police Officers across the nation can be destroyed in one act like that. Sheriff swanson walked shoulder to shoulder with demonstrators. He says he hopes they are regain the trust in the community. New numbers of confirmed cases of the coronavirus. All while bay area churches opened today. And were seeing clouds to wrap up the weekend. But get ready for the return of big time heat. Over the next few days, how hot it will get and how hot it will last when we come back. The weathers perfect. Family is all together and we switched to geico; saved money on our boat insurance. How could it get any better than this . Dad, i just caught a goldfish theres no goldfish in this lake. Whoa its pure gold. Were gonna be rich. Were gonna be rich it only gets better when you switch and save with geico. Coverage of the coronavirus pandemic. Five local counties reporting new cases today. In total now, the bay area has 13,860 cases. 443 people have died. The state of california, now more than 110,000 cases, more than 4,200 deaths. Some Church Leaders said they could have in service today. And this is video from the live stream. And you see here the audience following social distancing guidelines, spacing them ssms, masks everywhere. He said the church separated the rows by at left six feet. He said the church cannot accommodate 300 people. That is triple the number allowed under state guidelines. He does not the plan to turn anyone away. Another popular bay area restaurant, a victim of the pandemic. Right now, a live picture of San Francisco. The demonstrations continue. Several hundred people trying to get a look at it right now. At least several hundred people marching in the streets of San Francisco, all peaceful so far. We will keep you posted. On south bay pizzaist institution, vitos pizza announcing its going to close. They say the coronavirus slowed down business and the rent is also going up. And rob mayeda now, i dont have any idea what tomorrows going to bring. Weather is changing. We had summer last week. What did we have yesterday . Rob, what is going on . Yeah, we are running out of icons there on the sevenday forecast. You this the storm, the heat and now you have a little more heat just around the corner. In the meantime, you have a nice evening outside, a little cool if you are around San Francisco. You can see the clouds, the low clouds, and temperatures currently 60 degrees, walnut creek, we had downpours, hail, thunder e thunder, not the case today. And san jose, overcast skies there, and temperatures at 72 degrees. By tuesday and wednesday, we might see e temperatures as much as 20 degrees hotter than that. So for now, the air quality looking good. Thanks to the on shower winds and the Cool Temperatures and clouds heading to monday, in the an issue but keep an eye on the air quality. The source of the clouds we have outside, lid and high level clouds coming up from the south. We will widen out and see a rich plume of moisture here heading through central and south california. There is not enough lift to make it fall as rain. We have cloud cover and not really like the storm we saw yesterday that fired up lightning and hail and thunderer. Right now, the only activity as we head to tomorrow morning, notice the tend. The low clouds and they will clear out the skies, lead to sunshine for monday. It will transition us to a hotter forecast, and look at san ha rosa. And lets look at the hourerly hour now if this, and we are likely to see the 90s make a comeback. And we could see we will see the pressure in the middle of the week, the cooler temperatures by friday, we could see a chance of showers, perhaps late saturday. This is june 6th. We know its going to be cooler but could we see showers neck weekend . That is something we will watch. And wednesday is the warmest day. Downtown, 80 dries for a day and valleys that are cool they are weekend. Muggy too yesterday. Things will dry up and a taste of summer returning for wednesday. There you go, all the bases covered there, and summer and spring and low 70s next weekend. Its better than a nonstop heat wave. You keep telling us what is coming this way and well doeal with it. Thank you so much. Still ahead a problem looming in the fight against covid19. A shortened supply list and the Bay Area Company that may have a solution. Can countries around the world trying to get their hands on covid testing kits there are concerns about whether they are enough supplies to meet the huge demand. Bigad shiban on how a company is looking to solve a massive dilemma with a tiny innovation. Reporter the test tube has been in laboratories for about 200 years but the Silicon Valley startup has reinvented it. We said, question do bet wither. Reporter this pawer is founder of mawi dna technologies. Inside this office, he and his 20 person team is looking to recov revolutionize how they are testing. There is a threat to the supply chain. To get tested, typically the swabs are placed vials for testing. But the testing is lined with tithe and allows a second camp until the small tube. Two is always better than one. Its simple math. You can detect more of the virus. Reporter businesses and government anencys in nine states have fda approval to use the test tube. Half a million have sold in two months. Dr. Mawi says with his device, coronavirus tests can be protessed faster. And when traditional test tubes are sent to the lab. Reagents are required to isolate the molecule ares are hot agents. What if we cannot get the reagents . Its like a car wous gas. Useful. You dont any where. Reporter and the designs with them are better steablize. A snapshot captures a sing the moment. It doesnt change. With other solutions, the sample can fade over time and that is why the extra chemicals are needed. That is not required with the newer test tubes. You are the not adding stress. Reporter right now, countries across the globe are vying for the same supplies. This is unprecedented. We are looking at demands globally. Reporter george is a senior managing director in consulting. For 30 years, he has been helping medical companies solve their supply problem. He says companies havent run let but that can change as communities loosen the stay at home orders. Doing a temperature screening is not sufficient. The reality is, the way we have been testing could change dramatically in terms of frequency . Very much so. Very much so. That will put the pressure on the volumes needed to satisfy that command. 1. 5 million coronavirus tests have been done in california. And millions more tests will be needed if employees, daycares and schools make testing and retesting mandatory in order to reopen. We need more testing, for sure. Absolutely. To contain this virus, you need to know who has it and who doesnt. Reporter dr. Mawi invited us to this plant 50,000 of his test tubes are created. In the first week of july, we are scaling up to 100,000 vials a danchts 100,000 . Yeah. Reporter he is hoping to meet the demand for testing. When it came to looking at all the things, the supply chains, you have to start thinking outside of the box. More and more testing sites like these are beginning to open but most samples become less reliable unless they have put on ice and processed within three days. The new test tubes are good up to 201 days even at room temperature. When they have to be transported out of remote community. If you have a story for the unit, give us a call, 888996tips. Reporter visit our website. Nbcbayarea. Com investigations. We want to leave you with a look, a live picture of San Francisco right now. This is down on fremont street. Two groups of protestors have come together and we are under the impression they are headed to city hall. We will keep you updated on this and san jose as well. Now that san jose has announced a curfew. After this break. Feel like getting back out there . Nissan is ready to help you