I personally don't even think actual "crime" is near the top of rap musics overall affects on the black community.
I think the biggest affect is how it has straight up DESTROYED our image as a collective and that alone has had a detrimental affect on a large number of other things.
Remember: if you destroy a groups image/reputation first, then everything else to marginalize those people becomes easier to do because society has become programmed to view those people as "undesirables" "useless", "bottom feeders of society" "dangerous" "threats" etc.
The world has become programmed to view blacks as dangerous menaces to society.
Rap music is being used to JUSTIFY our overwhelming presence in the prison system. Being used to JUSTIFY police brutality and things like redlining.
Wherever black people go, it's ASSUMED that crime, destruction and dysfunction will follow.
If the government tried to put black people back into slavery tomorrow, the world would feel as if it would be justified.
The world would feel as if society would be better off without the presence of blacks.
That time is coming y'all.
They are conditioning the masses to not feel any sympathy towards blacks when the extermination comes.