The media is owned by capitalists. Anything that threatens capital needs to be snuffed out.
This is Tupac who was murdered.
This is Kanye West who is a professed Nazi and still alive.
These songs were within a decade of each other. I know that's not enough data, but I think the differences in tone can be accounted for which was was more acceptable to power.
Maybe. This is all conjecture, but it seems convenient that Tupac who advocated for helping the poor in his music was murdered and all the black artists who popped up after him (Beyonce,JayZ, Kanye for example) are all about "get my money" music.
Of course, I have no evidence, but if you've read about all the various CIA psyops over the past 80 years, it doesn't sound that far fetched.