We've talked a lot already about rap stars behaving badly, but rock stars had them beaten to the punch on that front by many years. You don't expect rock stars to be model citizens, but legendary Guns n' Roses frontman Axl Rose has almost made upsetting people an art form. Even his stage name is an anagram of something rude, which we won't repeat here! Rose is notoriously difficult to work with, which has resulted in multiple line-up changes within his band, and also outraged black and gay communities with violently racist and homophobic lyrics in the song 'One in A Million.'
Although Rose never formally apologized for the lyrics, he did attempt to explain that they weren't intended to be taken literally. That may have been a weak excuse, but he's shown sympathy and support for humanitarian issues in more recent years. He even wrote to the President of Indonesia in 2015, asking for the death penalty not to be imposed in the case of nine Australian drug dealers who were facing trial.