Short answers, pulled from the story.
The 1989 album Straight Outta Compton features a track that inverts the legal system. Dr. Dre takes the role of judge while three group members act as prosecutors. Ice Cube, MC Ren, and Eazy-E stand before him to testify against law enforcement.
N.W.A received a letter from the FBI regarding their lyrics in 1989. Manager Jerry Heller later described this action as a rogue move by Milt Ahlerich who claimed to represent the Bureau but was actually a single bureaucrat with a bully pulpit. The letter stated recordings like N.W.A's were discouraging and degrading to brave dedicated officers.
Triple J played the track for up to six months before Australian Broadcasting Corporation management banned it. Staff members went on strike and put Express Yourself on continuous play from 9am until 4:30pm AEST. They aired the song 82 times total during the industrial action period.
Tiki Taane performed the song at a club gig in Tauranga on the 10th of April 2011. Police inspected the venue while he was performing live. Officers arrested him on charges of disorderly behaviour likely to cause violence to start or continue.
By 2025, the publication placed it at number 10 on its list of The 100 Best Protest Songs of All Time. In 2021, Rolling Stone re-ranked the song at number 190 in an updated list. The track ranked number 425 on Rolling Stones 2004 list of the 500 Greatest Songs of All Time.