'Many (most?) Muslims would have been offended by that picture though very very few (thank whoever) would react in such an extreme way.'
Showing how little this has to do with Islam or the cartoons.
Alan Henning didn't publish any cartoons and wasn't offensive, nor was Lee Rigby, James Foley or any of the others who were painfully murdered.
The people who do this kind of shit are well able to flame the fires all on their own, they don't need an excuse.
The cartoon isn't to my taste, but I can't help but think who the fuck do they think they are to try and tell anyone what they can/can't do??