If you think about hip hop in the 90's and early 2000's it's wasn't as bas as now. Then they use to talk a out political right and world problems. Look at the song "The Chioce is Yours" by Black Sheep. They speak on behalf of politics of the United States. No doubt people thought it was bad. Everyone has an opinion but it wasn't like today.
In today's music it's not about politics or world problems. It's about sex, drugs and "getting