In an angry exchange last night, MSNBC host Lawrence O'Donnell shut down and humiliated Orly Taitz, the dentist/lawyer who for years has pushed false claims that President Barack Obama is not an American citizen.

Asked repeatedly if she would say whether she accepts the long-form birth certificate the White House released, Taitz instead held up the president's selective service registration and tried to steer the conversation off-course.

O'Donnell wasn't having it and grew clearly flustered as she continued to avoid his question.

"Orly Taitz: Will you talk about Barack Obama's birth certificate?" he kept asking.

That apparently wasn't on her agenda.

"Alright, that's it. Get her off this show. Get out," he said. "You're not going to talk about the birth certificate so roll the tapes. Go home, you're fired. Go play with Donald Trump."

This video is from The Last Word with Lawrence O'Donnell, broadcast by MSNBC on Wednesday, April 27, 2011.

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