Why are the same people saying we should fear Muslim violence over the Qu'ran burning the same who say?

In my opinion it is because they are too PC and fail to realize Islam has declared a Jihad against our country, I realize that those who have done so are extremists, but a moderate might be offended at the bruning of a Koran , but would never resort to violence to promote a religion of peace. In my opinion they do so out of fear and out of disdain for our country. I COULD BE WRONG, BUT THAT'S MY TAKE.