In United States, black people are often brutalized and discriminated by police officers. Among them, many of these Afro American has unfortunately been killed already.According to this article entitled "why do U.S police keep killing unarmed black men" published by BBC news , most of the time the reason why the police tends easily to shoot colored people is because their belief are based on poor stereotypes (which is a form of racism) and they always assume that black people are armed and it leads the police to become violent with them.