A new witness in the police shooting of unarmed teen Michael Brown in Ferguson , Missouri , told CNN that Brown and the police officer tussled at the police car window , then the officer shot the teen multiple times , as Brown backed away . `` What I saw was when Michael and the cop were wrestling through the window , '' Tiffany Mitchell told CNN 's Don Lemon . A shot was fired while Brown was out the window . He got free , and the officer got out of the vehicle , followed Brown and shot him , she said . He raised his hands , and the officer kept firing , she said . Police fired tear gas at a crowd of protesters late Wednesday for another night , as the group gathered to protest Brown 's deadly shooting . Officers in riot gear then marched toward the protesters near a burned out gas station , which has become the gathering point for demonstrations . Police announced that they no longer considered the protest peaceful , before they fired the canisters , CNN producer Yon Pomrenze said . People fled in all directions , as the stinging clouds wafted by them . A separate small group of over a dozen people gathered outside Ferguson 's police station holding up signs and chanting protests for a fifth day . Officer not named . Police have said Brown died in a dangerous struggle after trying to grab the officer 's weapon , but witnesses say it seemed a brazen act of aggression by the officer on Saturday , and that Brown was unarmed and not threatening . On Wednesday , Ferguson Police Chief Thomas Jackson told CNN that the officer had been hit and suffered swelling on the side of his face . He was taken to a hospital and released the same day , Jackson said . Five days have passed since Brown 's killing , and the public still does not know the name of the person who pulled the trigger . There have been cries of a cover-up . `` That does n't give the community confidence . That does n't make it transparent , '' attorney Benjamin Crump told reporters . `` And remember , we 've got a long way to go before this community starts to believe that the police are going to give them all the answers and not try to sweep it under the rug . '' Crump was one of the attorneys who represented the family of Trayvon Martin , the teenager who was killed in a 2012 altercation with Florida man George Zimmerman . But Mayor James W. Knowles said police have received death threats against the officer and his family . They want to prevent further violence , he said . Hackers have gone after his personal information and worked people up against members of government and the police , he said . A town in turmoil -- 5 things about Ferguson , Missouri . Trouble at night . Police have asked protesters to restrict their gatherings to daylight hours , after violence has broken out repeatedly after nightfall . Protests during the day have been peaceful . Protests on Sunday and Monday ended with clashes with police and looting . Police have made 47 arrests after Brown 's shooting , KMOV reported . `` We understand the anger ; we understand that people want answers . We understand that we 've got a problem , but we 're just asking people to be peaceful , '' Jackson said . The Ferguson-Florissant School District announced that it was pushing back the start of classes this year . School had been scheduled to resume Thursday . Civil rights . Federal civil rights investigators and the FBI carry out their own inquiry into the controversial case . In the town of 21,000 , there 's a history of distrust between the predominantly black community and the largely white police force . `` Race relations is a top priority right now and , as I said , I 'm working with the Department of Justice to improve that , '' Jackson told reporters Wednesday . Only three of the city 's 53 officers are African-American , and Jackson said he is working to change that . Dorian Johnson , who said he saw the shooting , told CNN on Tuesday that the officer who opened fire is white . Brown wanted to pursue an education and was keen on staying out of trouble , his mother said . He was to start classes at a local technical college this semester . Teen was two days away from starting college . What we know about Michael Brown 's shooting . Trayvon Martin case fast facts . Opinion : How many unarmed people have to die ?
Ferguson-Florissant district pushes back the start of school . `` We understand the anger ... that people want answers , '' police chief says . Officials decline to identify officer who shot the teen , citing safety concerns . Family 's attorney : Police should be transparent , `` not try to sweep it under the rug ''