Killer Mike is not very big

Sorry. I have no idea why people think he is some superstar with black people. Heck, we care more about Drake, and he's canadian. Many rappers focus on political and social issues. That's what rap started out as. 'Dont push me cause I' close to the edge. We're trying hard not to lose our heads, ah ha ha ha." That is discussing poverty in the Ghetto. Police violence. Society. Our place in it. As do many songs. Rap is political. Even gangster rap. Some people do not listen to what is being said properly because they do not have the vernacular to understand the layers of meaning. The nuances.

Now Hip Hop? Blingy, but still catches the state of Black america. So, I think maybe you need to go back and look at the History of Rap. Tupac was talking politics and social justice in his stuff 23 years ago and is still more popular than killer mike.