During the Black Lives Matter protests the cops used them as an opportunity to use violence against against protesters and they did the same thing during Occupy Wall Street. Nothing has changed after the Trayvon Martin protests of the Michael Brown protests. It remained business as usual with law enforcement and the corrupt for profit criminal justice system. Things did change after the oligarchs killed Martin Luther King and there was six days of rioting civil rights legislation was passed and when protesters burned down police stations some some police unions were disbanded. That's a start.
BLM protesters set Portland police station on fire
Two things motivate both humans and non human homo sapiens and those two things are fear and money. Altruism is about as rare as rocking horse shit. Red Pill Warning! Most people really suck. While the peasants most adhere to the law, members of the power elite power are above the law unless their crimes affect other members of the power elite.
Lasting change or real reform will only be possible when the criminal elite are gone along with their ill-gotten wealth and power.