This video shows images from Bush protests while playing the audio of an MSNBC video discussing the tea bag protests. It does a good job at showing how both extreme sides use of the president equals Hitler is completely asinine. I am not sure about the liberal Bush/Hitler signs, but those Obama/Hitler signs at tea party protests are actually Lyndon LaRouche supporters.
This video is more representative of the tea party.
I realize that there is passion on both sides, I just wish that they would stop glorifying that an evil man like Hitler. It's done so much it's stupid...I think anyone that makes that association is a simplistic idiot who cannot communicate their opinion effectively.