Forgive me for jumping in late here, but I have a theory on how the right went crazy...
Sarah Palin.
She was such a horrible candidate that had no business even being in the discussion to be nominated for VP that the media absolutely destroyed her (incidentally, I feel strongly the same "Liberal" media would have destroyed a Democrat had they been dumb enough to nominate one that was as Fake Sugar Dick (WARNING, NOT THE REAL SUGAR DICK!) as her)...BUT when the "Liberal" media "attacked" Sarah Palin, people got pissed and dug in. All of a sudden, they absolutely HAD to defend crazy crap because it is better to defend crazy crap than let a black man become prez. Defending crazy became a habit, and now it it is necessary.
The sad thing is, I have no idea where it is going to stop, especially when you have Beck, Hannity, Rush, Palin, etc so willing & ready to feed the trolls because they are getting FILTHY rough ridin' rich off of these people.