The nut in question is apparently not a political ideologue and was not spurred by the hate mongers. There have been enough acts by ideologues so inspired in recent months that it's not surprising people jumped to the wrong conclusion. I'd bet they won't be wrong next time.
... "The era of procrastination, of half-measures, of soothing and baffling expedients, of delays, is coming to a close. In its place, we are entering a period of consequences." - Winston Churchill, The Gathering Storm