Does the Killing of George Floyd Prove That We Have a Problem of Raceism in the United States?

Do we have reason to believe that had floyd been white, he wouldn't have died in a similar way? Do the dozen or so other videos that have emerged in recent years of black men being killed by cops. Do they prove or even suggest, that there is an epidemic of lethal police violence directed especially at black men and that this violence is motivated by raceism? Most people seem to think that the answers to these questions are so obvious that even to pose them as i just did is obscene. The answer is yes. And it's a yes that now needs to be shouted in the streets....