There is anger on the streets in Minneapolis. And Los Angeles. And Columbus and Phoenix and Denver. It is deserved anger fed by the death of George Floyd, yet another unarmed black man killed as police arrested him.

Another. That’s the key word.

The mature and reasoned response is, of course, to explore what went wrong on that Minneapolis street on Memorial Day. Why did the police officers responsible for this unnecessary use of force still have badges, given their history of previous complaints? Why did it take so long for authorities to arrest the officer filmed pinning Floyd to the ground with a knee on his neck? What can Minneapolis—or Los Angeles; or Ferguson, Missouri; or New York City—do to improve relations between police and the communities they serve? Cue up the commission, bring in the experts, hold some hearings, let people vent for a bit and then, by golly, we’ll have change.

That’s the lie we tell ourselves with depressing regularity. The solutions we keep trotting out fail to address the real fault lines here. Police now often carry body cameras, undergo implicit bias training and embrace community policing strategies aimed at bridging the divide. We keep looking for the technology or training that can be bought and implemented to end police brutality, and there have been some improvements, particularly in cities where police departments have restricted use of force in making arrests. But progress is not victory.

And this is not a technology problem, or something that can be ended with some policy tinkering. It is a function of deep structural racism that we as a nation have proved to be incapable of exorcising.

According to one analysis, unarmed black Americans today are five times more likely to be killed by police than unarmed white Americans. We can blame some of that on over-policing, itself often an expression of unacknowledged bias. But the threat comes not just from people with badges. It crops up in daily life in the most mundane ways:

A white woman calling New York City police on a black man out bird-watching who had the gall to ask her to leash her dog.

A white man—again in Minneapolis—calling security when four black men rejected his demand for identification proving that they had permission to use the gym in a building where they all worked.

A Starbucks manager calling police in Philadelphia to arrest two black men who were waiting to meet a potential business partner.

That’s not the police sparking a racially framed encounter; it is white Americans surfacing the structural racism that, in its worst excesses, ends with the deaths of black Americans. Trayvon Martin. Ahmaud Arbery. Their killings did not involve police.

Yet it is in the intersection of structural racism and the police—the people whom we empower and arm to enforce laws—where such violence resonates with such ferocity. Floyd’s death, as Minneapolis City Councilwoman Andrea Jenkins said, “was a symbol for a knee on the neck of black America.”

That knee has been there for an unconscionably long time.

Too long.