Racism is the belief that another race is inferior. The fact that many blacks don't like whites because of their behaviors does not mean they think whites are inferior.
The Trumpsters continue to enable more racism by aggressively, arrogantly refusing to admit the obvious. The enablers of racism are probably worse than individual racists, because they provide cover for many more.
But fortunately, via freedom of expression, these people are more than willing to shine the light on themselves for us. We know who they are, what they think, and who agrees with them. That's valuable information. At least that's a start.