Hal Turner was a Neo-Nazi who had a Podcast show online where he would rant on the government and also people from different races. Anonymous decided to troll him online by flooding hid server sending hundred of boxes of pizza to his house and made in incapable of paying for his own show. They hacked his email and found out that he was a confidential informant for the FBI which if you were a NeoNazi you could not be. So he was arrested for making death threats to a few judges. I think that anonymous kinda went a bit too far but in the same way they discovered that he was making death threats also which landed him in jail.