A reader writes:
Well let's go to the video:
Now, I can see where the misunderstanding might come from.
The questioner asked if she believed the protests were a "legitimate, grassroot opposition" and when prompted by the interviewer whether they were astroturf, she said "well you be the judge." Then she notes that
They're carrying swastikas and symbols like that to a town meeting on healthcare.
I took her to mean that only very politically motivated activists really respond to the health insurance reforms being weighed by the Congress by ringing the debate immediately to the equation of Nazism. That's her response to the question of "legitimate". Normal people debating health reform with their representative don't bring swastikas with them. But I can see no serious way to see her as saying they were dressed up as Nazis to gain support and credibility.
Fox News' Bill O'Reilly spun it that way, of course. He wants his audience to believe that Pelosi was accusing Republicans of being Nazis. It's great for ratings. But, so far as I can see, it's untrue.