I'm not a fan of organized religion of any kind, being a happy heathen myself. However, sitting as an offside observer here, it does seem to me that you'd never see anything this repugnant in a Christian reaction to something that might be considered offensive to that group.
For instance, take for example the regular ribbing Christianity gets on "South Park". Though Jesus is normally depicted as a hippy-dippy, peacenik resident of the town who happens to have his own community TV call-in show, he was seen in one episode to take up arms and head into Iraq one fine Christmas in order to free a captured Santa Claus from Muslim extremists. Apparently, when up against the wall, Jesus can go on a major killing spree with automatic weapons.
Also, Jesus's dad has been revealed on "South Park" to be a rather hideous, though benevolent, reptilian monstrosity (showing himself most reluctantly, by the way, after first warning mankind that they might not be able to handle such an unpleasant truth). Again, I'm sure this might be considered offensive by some Christians, however, the difference here is the reaction to it, or more precisely, the lack thereof.
You see, the vast majority of Christians, even if they considered these cartoon portrayals somewhat offensive, would more than likely just shrug it off. Many would undoubtedly get the joke and laugh along with the rest of us. Some might feel compelled to write a letter of protest to Nickelodeon, perhaps threatening to boycott the products of the advertisers. They might even silently pray for the souls of those who produced the show. But here's the big difference between modern-day Christians and Muslims: Not even one offended Christian would call for the imprisonment or the death of anyone connected with the making of the show. Sadly, more than just a few Muslims seem to be without humour and are too quick to condemn to death anybody who dares to show their beloved Mohammed or Allah in a less than favorable light. I guess only we Western infidels enjoy a little joke at our own expense. I'm just glad I live in a country where freedom of expression includes humour.