Sociological deviance theories best explains excessive police

Questions: Which one of the sociological deviance theories best explains excessive police violence?  You should consider both the police killings of unarmed Black men as well as aggression against peaceful protesters to be deviant behavior, the question is not concerned with legitimate police use of force in fighting crime. Apply this theory to suggest the best strategy to decrease the problem and explain in such a way that it is clear you understand the theory.

Remember these are not personal opinions or creative writing questions, you’re being tested on some specific sociology.