There are better ways to express political disagreement. Debate, discussion, books.
Bill O'Reilly is not the source of their problems. Neither is Rush Limbaugh. They did not cause the social problems afflicting these people: illegitimacy, single-parent homes, failing schools, drugs, gang rapes. Crude, vulgar, and sadistic rap songs. When people start singing songs about killing someone it becomes clear they are the kind of people who want to kill in reality. That is not advancing anyone's cause.
"These people"? The rappers who did this song are all white.