Our side has compared the Democrats to Hitler too, myself included. It’s just as stupid coming from either side.
I'm guilty of it myself, at least for the few months leading up to the 2008 election. We didn't know anything about Obama and what his plans for America were, on top of how thoroughly brainwashed the majority of the country seemed by "Hope" and "Change" had me scared to death.
What set me off were the creepy ads with choirs of children singing praises to Obama as if he were some kind of Messianic figure. Also the militia of black kids doing marches and shouting slogans about him. It reminded me of Hitler youth propaganda movies or videos of North Korean children singing for Dear Leader.
Ten years later, I like to think I'm a little wiser, as we all do. I thought America was doomed when it elected Obama (twice), but now I see that we really dodged a bullet.