Radio host Rush Limbaugh on Tuesday said that actor Robin Williams' alleged suicide was caused by his "political leftist" state of mind.

"What is the left's world view in general?" Limbaugh asked his audience the day after Williams' death was announced. "If you had to attach, not a philosophy, but an attitude to a leftist world view. It's one of pessimism, and darkness, sadness. They're never happy, are they?"

"They're animated in large part by the false promises of America because the promises of America are not for everyone," he continued, pointing to a Fox News report that suggested Williams had struggled with financial issues, and survivor's guilt after the deaths of entertainers like Christopher Reeve, Andy Kaufman and John Belushi.

"Robin Williams felt guilty that he was still alive while his three friends had died young, and much earlier than he had." the conservative talker explained. "He could never get over the guilt that they died and he didn't."

"Well, that is a constant measurement that is made by political leftists in judging the country."

(h/t: Media Matters)