The fear is that Obama might brainwash their children into becoming liberals; however the brainwashing has actually occurred on the right, where right-winger have been brainwashed by the "politics of fear" into this sort of panicky, ridiculous behavior.
One thing these conservatives forget is that none other than their hero Ronald Reagan did the very same thing, talk to students in a similar speech. You didn't see liberals up in arms about that did you?
Also, JFK and George H. W. Bush did the same. What is the difference? The only thing that comes to mind is the obvious: race.
Or perhaps its what was shown in today's Doonesbury, where it was said there aren't enough reasonists to offset the crazies. Reasonists, as the strip says, believe in an evidence-based world, something these others don't:
Watch Reagan attempt his form of brainwashing below, in 1988: