"My thing is ... I didn't get a fair trial. This is a sham. Do what ya's want with me," the mafia boss told the judge.
"You're a coward!" Patricia Donahue, the widow of one of Bulger's alleged victims, yelled in court. The judge quickly settled everyone down.
"I'm making the choice involuntarily," Bulger said about refusing to testify. "I feel I've been choked off from making an adequate defense."
Prosecution witness found dead
A prosecution witness who was set at one point to testify against Bulger was found dead just a day after he was dropped from the prosecution's witness list, a friend said.
Stephen Rakes, 59, had turned up almost every day in court to watch the trial and was devastated when he learned he wouldn't testify, according to his friend.
It seemed like quite a strange coincidence at the time that Rakes was murdered in the middle of the trial. But the district attorney has said his death had nothing to do with the trial -- Rakes was likely poisoned by a man who owed him money.