I have never called George Bush a Nazi and I think the people on the left who did were morons. I also think that the Congressman's statements were reprehensible. He apologized, but he shouldn't have said it. You, however, do not condemn similar rhetoric on the right, you happily engage in it. As for the Thatcher thing, pointing out that a politician was unpopular at the end of her career is hardly the same as equating the President and progressive liberals with dictators and murderers. I could have pointed out, that Margaret Thatcher was a huge supporter of Agusto Pinochet, the fascist dictator of Chile who had any critics of his regime "dissapeared" and buried alive in cement walls. Hardly an example of small government.
This is why it is difficult to have an intelligent conversation with you. Instead of debating the merits of policy, you engage in hyperbolic attacks that have no basis in reality.