I just read that some parents are mad that Obama is giving a speech about the importance of education and doing well in school. (Read here)
If you're concerned about your child seeing such a thing--you're an asshole. Period.
Where on Earth is the harm in someone encouraging kids to see the value of their education? If you'll let your political leanings get in the way of your kids hearing a motivational, non-political message from our President in Chief, then I fear for the type of people you're raising.
I personally believe George W. is a war criminal and quite possibly the worst president in the history of our country, but wouldn't have dared protest something like this while he was in office. Hell, I took my kids to stand and wave at him as he drove through our city (and I behaved the entire time).
If something like this is even a blip on your parenting problems radar, I think you're doing something wrong. Also, please quit comparing Obama to Hitler. Doing so only proves that you are significantly undereducated and lack any true understanding of even basic history.
If you don't want to like him, that's fine. Just don't look like such an idiot while exercising that right.