Conversation so far:
In what social activism activities was Curtis involved with?
Curtis Mayfield was known for introducing social consciousness into African-American music.
Did he have a lot of fans?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Mayfield was unique in his ability to fuse relevant social commentary with melodies and lyrics that instilled a hopefulness for a better future in his listeners.
Did he create any famous songs or hits?
Mayfield's "Keep On Pushing" was actually banned from several radio stations when riots began flaring up in some cities.

Question: Was the ban eliminated later on?
Self-contained rewrite: Was the ban on Curtis's hit song, "Keep On Pushing" eliminated later on?