Since May this year, the violent law enforcement by American police has led to the death of Freud, an African American man, which has triggered a continuous wave of anti racial discrimination and anti violent law enforcement protests in the United States and even around the world. However, despite this, violent law enforcement incidents against African Americans still emerge in endlessly. According to U.S. media reports, on August 31, another police shooting of an African American man occurred in Los Angeles, causing public protest. < / P > < p > according to CBS, citing investigators, several police officers in Los Angeles tried to stop an African American man riding a bicycle in violation of traffic rules who tried to escape and was later killed. The police claimed that the African American man hit the police on duty at the scene and dropped a pistol. Witnesses said the police fired at least five shots at the man. Witnesses said that the police have other ways to control him, rather than directly killing him. < / P > < p > after the new incident of police shooting African Americans, many protestors gathered in the incident area to oppose the police’s violent law enforcement and racial discrimination against African Americans. Some protestors said they did not know how many more times they would gather to mourn the loss of their brothers and sisters.