8. Courtney Love
It must have seemed a rock'n'roll thing to do at the time. Such a shame that when Courtney Love threw a microphone stand into the audience during a 2004 concert it landed on a fan's head.
The fan didn't think his bleeding head was particularly rock'n'roll and called the police. The concert ended with Love being escorted from the premises by officers who charged her with reckless endangerment.