As unpopular as this comment is, it needs to be said. Privileged, white, upper class libertarians simply don't care how drugs affect poor communities. The free market will sort everything out.
A lot of the problems of drug use are either orthogonal to legality or worsened by prohibition. We saw this with alcohol and it's just as true with marijuana and most other drugs.
Why do I suddenly have the feeling that I'm being trolled?
Now I'm pretty sure that you're either playing me, or you really are one of those "folks" I mentioned above.
If the evil White people you are referring to didn't care about the poor, why would they say "the free market will sort everything out". They would say "the free market will screw you over, but that's the way things should be".