What if her website said, "Kill Hillary?"
I wasn't really addressing the "Kill Bush" thing. I was just addressing the question of whether protest is in itself bad. I don't think anyone should put "Kill Bush" or "Kill Hillary" on a website or t-shirt, etc. That is wrong on a number of levels. Protesting peacefully is not wrong, though.
"What if her website said, "Kill Hillary?"
That is not protesting, that is a threat. Big difference.