Just look this English video from The Young Turks:
http://www.youtube.com/watch?v=OMz0aIM2_sM&NR=1

The moderator is Muslim and even he does not get why they get upset. He says it quite simply:
The Muslim is told to not draw a picture of Mohammed.
The Muslim is told to not eat pork, to not drink alcohol, to pray... and so on.

But people of other religions don't belong to this circle, they can eat pork, drink alcohol or paint an image of whatever they like.

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