Most might think that in America, you can freely publish what you wish, then (and now) an over-zealous prosecutor can put you on trial simply because… - Marc Randazza

To the best of the Plaintiff's knowledge, no pony has ever attacked an American politician—and presumably the Secret Service would be able to intervene, should Mr. Supreme try and find some way to break that drought in pony-on-politician violence."

Some credible scholars say that making mass murderers famous motivates other mass murderers. (One might even argue that this article is part of the problem). Elliot Rodger sent his lengthy diatribe to the media before he went on his killing spree -- correctly predicting that his actions would propel his ideas (such as they were) into the marketplace of ideas on a digital billboard larger than he could ever have enjoyed had he not amplified them with his psychotic rampage. Accordingly, should we not silence him? Wipe his words from the Internet forever? Let him be forgotten?

Speech is presumptively protected. And, while there were decisions at one time that prohibited speech that had the tendency to produce negative results, those were thoroughly wiped away in 1969 in the landmark case, Brandenburg v. Ohio.