But it doesn't occur 'disproportionately' to black people. It occurs in pretty much exactly the proportions you'd expect it to occur relative to the size of populations and their relative likelihood to commit violent crime.
Do young black men have reason to be wary of cops in the US? Yes.
Do cops have just as much (if not more) reason to be wary of young black men in the US. Abso-f@cking-lutely. They are much more likely to be killed by a young black male, so guess what? They tend to treat young black males with much more suspicion and more robustly. As a result, young black men harbour ever more anger and resentment towards the police and behave in ways much more likely to bring them to the attention of the police. And so it goes on...
This is a vicious cycle that is only going to be made worse by treating it as a racial issue.