Growing up Muslim, I'd always hear this story about how the Prophet Muhammad nursed a sick, elderly woman back to health, regardless of the fact that this same woman would throw garbage on him everyday for being a "heretic." Actually, her NOT throwing garbage is what tipped off Muhammad to her being sick. So yeah, he wonders why there's no week old hummus and goes up to her place to investigate. He finds a lonely, elderly widow, all by herself, and on her last breath. So, he hooks her up.
My point is that if this guy can help someone who throws garbage on him EVERYDAY, this same guy wouldn't care about South Park, or Danish cartoons, or anything. It's all love.
So, to all the radicals out there, go take the time to find out WHY you're even upset. Look at your Prophet's life and his teachings. You do that, and I'm pretty sure you'll feel like a f*cktard for even considering that this death threat is for any legit reason.