Well, yeah.
It's the media.
EVERYONE remembers the 'whites only' vs. 'coloreds' water fountains, but no one ever posts pictures of the 'black' vs. 'not black enough' fountains.
What you guys aren't getting is
time!
Yes, some very bad things happened in the past. There are no victims of slavery (other than modern sex slaves but that's not racial) around--it's not hurting people.
There are some victims of Jim Crow but they're retired by now. The effects are minor.
When you look at what is causing
current problems you need to look at
current causes.
A big part of the problem is the drug war.
Beyond that, though, is the problem of having someone else to blame makes it so much easier to avoid looking at the real problems.