Terror Double Standards

Why is this a surprise? Foil Islamic terror: you're a hero. Foil Leftist terror: you're a snitch. Money graf:

Darby has learned that if you disrupt a terrorist attack on Americans by Islamic fundamentalists as Dutch tourist Jasper Schuringa did on Christmas Day, you’re a hero, but disrupt a terrorist attack on Americans by left-wing fundamentalists and you might as well be a terrorist yourself.