It was pissed off muslims, and incidentally muslims who to an extent I think had some reason to be pissed off as well. I just don't agree with the way in which they demonstrated their 'pissed off ness' as it happens.
Obviously it's impossible for you to consider this but did you know according to conspiracy theories, Obama is probably Muslim. He even admits to growing up in a muslim family!? Did you also know Obama is actually related to Hitlers butler (i think) according to conspiracy theories?