Megyn Kelly took on domestic terrorist Bill Ayers, co-founder of the Weather Underground, in an exclusive interview tonight on “The Kelly File.”

Ayers told Kelly that Weather Underground took credit for slightly more than 20 bombings in a period where there were more than 20,000 bombings in the U.S. in opposition to the Vietnam War.

Ayers denied involvement in the 1970 San Francisco bombing that killed a police officer and in the bombing of John Murtagh’s home.

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Of the Weather Underground’s actions, he said, “The idea that somehow this is the moral equivalent of 6,000 people a week being killed strikes me as nuts. We were destroying property, and in the course of discussion, some people thought we should go much further, but we didn’t.”

Ayers said it’s not bad to stir through these activities that happened 40 years ago, but said, "I think it would be fair and balanced to also look at the violence that was and is going on, perpetrated by the government, by the official agencies and organs of the government."

“You sound like – with respect – Osama bin Laden,” Kelly responded.

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Ayers questioned what violence the group committed, and Kelly listed several bombings, including the New York City police headquarters in 1970, the U.S. Capitol in 1971 and the Pentagon in 1972. “That’s what I mean by violence,” she said.

“That’s actually destruction of property, but you can call it violence, but to equate it to the murder of human beings is nonsense,” he told her.

Kelly said people could have been hurt, asking him if he recognized the recklessness of his actions.

“Who are you to endanger the lives of the individuals who may have been in or around those buildings?” she asked him.