Behring False Witness
Right-wing bigots are predictably pretending that everything Anders Behring Breivik (not Breitbart) ever said and did and thought -- especially praising their websites -- is utterly meaningless. The guy was a loon, and nothing he ever did can ever be attributed to, or associated in any way with, the groups he identified with!
This, of course, represents intellectual dishonesty unseen since the majority published its opinion in Bush v. Gore.
Bonus Unrelated Question: Was there ever a non-state-affiliated mass murderer who had so many headshots of himself?