All of those communities are and have been very involved in actively trying to stop any radicalizing they can.
This can be clearly seen in Syria and Iraq where pretty much all the fighting on the ground is done by ... Kurds. Who are perceived as terrorists by a large part of "all those communities" you're alluding to.
So yeah, BS.
They showed a class debate about the attack on the news this afternoon:
moderate muslim children in Belgium are not shocked by this terrorist act. 'Everybody knows you shouldn't portray Muhammed,' was all they could say. No 'we have to defend freedom of press' or 'making fun of religious zealots should be allowed'.
And why should they? Muslim fundamentalists aren't the only group demanding that certain words, certain behaviour should be forbidden. So do feminists, homosexuals, politicians, the handicapped ... And we listen to them, don't we? Even if only to stop their incessant whining.
Now, naturally, we shouldn't expect all of these desillusioned, abused, bullied, repressed groups to use rhetorics to achieve their goal. We shouldn't expect all of these groups to fight for their cause with essays and books and debates. Not everyone can be Ghandi. Of course not. Some of these groups will use other ways of righting the wrongs. Knives. Bombs. AK-47's.
Charlie Hebdo gets a lot of support right now, but that used to be different. Even now, after the tragedy, an oikophobe like Sander has already called the magazine a racist publication. It is not. It is a satirical magazine that heckles all religions, politics, injustice. Many years ago, when Charlie Hebdo was experiencing its first clashes with muslims who interpret the Qu'ran as a war declaration, an ever growing group I should add, the liberal left chose the side of islam. Because political correctness demanded it. Here was a part of the West, an educated, intellectual part of it and a powerful part at that, who was so afraid of islam, so truly islamophobic, that it was willing to give into their demands. Yes, it was insensitive to draw cartoons about a military leader and self-proclaimed prophet. In less than 30 years the West had weakened. In the eighties Western intellectuals formed one solid block when Salman Rushdie was facing a fatwa calling for his assassination. No so anymore.
What we see today, all those people joining the "Je suis Charlie" movement, is Western hypocrisy in its purest form. Once the guys who did this are caught or killed, we will soon hear from the political correct again. Two murderers will become two desillusioned brothers, discriminated against from birth like all muslims are discriminated against constantly, incessantly in the free West, the big bully. Two brothers who had no other options in life - because the West who invested in them, offered them a home without wars, damaged them anyway, them and their people. And their religion which is more important than all other religions for it is the last, the definite word of God.
As always, the oikophobic part of the people will side with the "moderate" muslims who think it's really sad that people got killed and can't wait to say so on tv, but firmly believe that no one is entitled to draw Muhammed. Because Muhammed said so.
If political correctness is not corrected itself, it will eventually devastate the West. It is opening the gates to barbarians and asking us to not show any fear, not have any comments and definitely have no critique. It is asking us to accept things completely alien to our own culture and erase parts of our own, just to avoid problems and circumvent violence. It is turning us into Swiss cheese.
Keep this up and sooner or later we will have battlefields in Europe once again.