U.S. President George W. Bush recently used the Israeli Knesset (Parliament) as a platform to give a speech denouncing his political opponents' intentions to have a dialogue with Iran in order to attempt to peacefully resolve various issues.
Bush referred to this as "appeasement" and made the embarrassingly inappropriate comment that this appeasement was just like the appeasement of Hitler in 1938.
This talking point has been repeated ad nauseam by right wing commentators - ignorant right wing commentators.
Chris Matthews finally called one of them on it.
He repeatedly asked Kevin James - who could only repeat the word "appease" and its variations in response - exactly what Chamberlain had done in 1938 that constituted appeasement. James could not answer. Presumably James did not know.
The appeasement of Hitler was not the part where Chamberlain talked to him. The appeasement was the part where he let Hitler have parts of Czechoslovakia without a fight.
There is nothing "appeasing" about talking to your enemies and trying to find a resolution.
I'm surprised by two things
1) It was Chris Matthews who burned Kevin James on this
2) In the youtube clip above, Matthews actually admits partial responsibility for the War in Iraq, saying that that the media failed to ask the tough questions and caved to pressure to "be patriotic".