Just as it is everywhere. But I don't suppose Americans are intrinsically more racist than other people.
Human beings are designed by evolution to discriminate. So it is working out how to channel that in a non-damaging way that is hard. Countries take different approaches.
My issues with the American response to racial discrimination is that I don't think it will ever work. Jumping on every situation and presuming racial motives will cause many to harden their minds against the folks arguing there's a problem. Treating every conversation about race as an exercise in treading on eggshells will conceal rather than reveal issues.
I don't know enough about the officer to presume his motives. But if he's a bad apple, removal is a sensible option.
But a bad apple approach won't cure what ails America, in my opinion. Nor will exercises in trying to eliminate racial conversations between officers. Nor will assessments of groups of Americans such as police officers as closet racists. Nor will the parades of well-meaning people expressing horror have a useful effect. Nor will pulling down statues of General Lee.
None of that works to fix the issue. Because humans are what they are and changing human nature isn't an easy project; and because the problem is circumstantial.
That's to say, I think you can explain many of these incidents as resulting from the prevalence of guns and the police procedures which exist in consequence. They are trained to assume the worst - they respond defensively even when the situation seems innocuous. And they are trained to assert their authority in any situation, using a lethal weapon if necessary. That can go to an officer's head and lead to misjudgements.
So for me, if you reduce the number of guns, you will end up with a different, gentler approach to policing. Like in the UK where regular officers have a truncheon, even a taser, but no gun. That's possible because there are few guns in the country. We made that political choice. And so law-abiding people have little fear of the British police force - certainly of being killed by them - regardless of race! Same is true everywhere there are few guns among the population.
Not only this, but there's a correlation between black people and poverty in the US and between poverty and harsh policing methods. Naturally, black people suffer the consequences of the correlation.
So again, you solve this sort of problem by addressing issues of inequality, not by assuming malicious motives in individual cases.
If you can manage these problems, then I think the issues of race will be much diminished. That's to say, the incidents result from the circumstances and you won't affect the number of incidents without changing the circumstances.