O'Reilly flips out as someone tries to have a reasonable discussion

O'Reilly Rages Against Joan Walsh Over Tiller Murder (VIDEO)
(Huffington Post)
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Is O'Reilly's conscience getting to him? I know that he is a blustering blowhard, but he is so extremely defensive here and doesn't let Walsh speak for more than a couple of seconds - at most - before talking over her. She get all the actual points in and he just rants without even making sense.

I guess it is tough to be guilty of encouraging murders and domestic terrorism.