Make fun of Catholics -- WE won't whine and/or kill you

I have two points in one here. #1, well, we WON'T whine and/or kill you if you mock us. #2, and more importantly, why ARE we allowed to be mocked with ZERO public outrage when other religions would be up in arms? Now, let me be clear, I'm no raging Catholic, and so I really don't give a shit, but it's still a very valid question. Hypothetical example: a casual, humorous "fucking Catholicism!" vs. a casual, humorous "fucking Islam!" Oh, wait, Catholics don't fly planes into buildings. But that's just ONE example...