I personally agree, I don't think some kid holding up a flag is a huge deal. He could have been trolling in real life.
The thing that gets me in those video's is the way everyone is acting. I don't see that as a way a rational person reacts when showing support for a politician they agree with. It's far beyond politics whatever it is.
Not equating all BHO supports to hypnosis, but the people like those in the video scare me when it comes down to emotion over logic in a mass audience.