Several postings on other sites have expressed "freedom of speech" for the nutty Christians who have stirred up the Muslims. I always thought you could not go into a movie and yell fire. Freedom of speech has limits when others are hurt or killed.
The restrictions apply to situations where the danger of panic or riot is imminent
That doesn't apply here. In this case:
1. Person A in the US said something on the internet.
2. Ten weeks later, and ten thousand miles away, person B killed person C in a riot.
That's no reason to censor A, nor to hold him responsible for C's death.