I've seen it with previous presidents but not as virulent as what we see now. I think that the deep disturbing doubts some people have about religion have the same genesis. People don't like Hilary (hell, I don't like her all that much!) say whatever they want and most people don't react violently, but dis the chump and the over-reaction is similar to picking on a person's religion.
If you get to thinking you’re a person of some influence, try ordering somebody else’s dog around.