Two things.
First I can sort of understand where Incomplete Dude's grandma came from. Some of the photo's of the rallies in Germany looked like some of the rallies held by Hitler. The combination of the buildings and German people could still strike at people.
Second in looking for a picture of Obama in Germany, I found this:
No I don't think you can compare Obama with Hitler, and I just thought the second picture was funny. If I find one with McCain, Palin or Biden I will post them too.