Over to the US now, for an object lesson in the pitfalls of sloganeering. Following a Bush speech in Israel, Republicans took the line that Obama would, if elected President, appease America's enemies - just like Neville Chamberlain. The basis for this attack is that Obama has said he would talk with e.g. Hamas.
Watch what happens (about 4 minutes in) when the shouty gentleman is asked to expand on the historical parallels:
Speaking as a former history student, I would just like to say, "Get in!"