You mean too little too late? That's possible.
A "proportionate" reaction would have involved lynching the perps - surrounding the police station with a crowd of heavily armed vigilantes, dragging the cops involved out, and hanging them from a traffic light. Is that your preference?
- - - - -
To another similar place, maybe.
They are being created continually - that's a large part of how they are maintained.
The rest of the maintenance (the shortchanged schools, the decrepit infrastructure, the abetting of abusive landlords, the denial of credit and undermining of local capital ownership, the abusive enforcement of laws and regulations, the suppression of political organization, the tolerance of "whitecollar" crime that victimizes those neighborhoods, etc etc etc etc) is also soaked in racism and racial bigotry.
Lack of money's the single biggest factor outside of race.
The white people making the large scale defining decisions (the ones that limit the choices of the individual decisionmakers) are always racist, and often racially bigoted. Racism of course, but often racial bigotry as well, has a strong influence on all the decisions involved - especially the "economic" ones.
The most effective means of abuse of black people in America have been the economic ones. They are not a separate category outside the effects of racism.