And that fraction is probably bigger than you expect. Everyone thinks their side is not racist. Gun control advocates never talk about banning .22 and .25 pistols, even though that is what really kills a lot of people. But most of those people are black. Instead, gun control advocates want to go after AR-15s. It's like they don't want to win.
That makes sense, though? It is far easier to conceal a handgun than any kind of rifle, and [to a close approximation] all guns are semi-automatic at most. A rifle may pack more punch, but I'd be more afraid of someone packing a Glock 17 (especially if they brought along a Glock 18 magazine).
In any case, the point I was trying to make is one of intent. We have stats which tell us where the low-hanging fruit is on the issue, but nobody seems interested in that.
I'd say that a significant part of Americans are simply indifferent. That can be easily confused for ill will.
Same with gun violence, which affects mostly black americans. And healthcare. Etc.
Either all of this is an extraordinary coincidence, or there in fact is a significant fraction of americans that are motivated by an antipathy for black people. An interesting start is to see who's funding all of that privatized politics (such as NRA) and what motivates them. If you've never looked into this, hold on to your hat.