So much nuance needed here.
It is easy to look at Islam and consider it to be the root of all evil. Quite frankly this strikes me as a clean cut case of confusing correlation with causality.
Let me start by saying I do not condone violence of any kind, whether it's sectarian for any religion we know of or just plain assholery. So I don't condone the invasion of Iraq, the bombing of Gaza or the invasion of Charlie Hebdo's premise in any way, shape or form. Too many innocent and civilian lives are squandered tragically by all of these actions. Whether it's Al Qaeda, Boko Haram, the IRA, ETA, IDF or Rote Armee Fraktion, US Army or Halliburton that's engaging in violence, I don't care. It's all the same barbarism to me when civilians die.
However, I do find myself at odds with the notion of freedom of speech. I'll illustrate by means of a small segway:
Ha-Joon Chang, the Korean economist has once stated that there is no such thing as a free market. A free market has an unlimited amount of sellers, an unlimited amount of buyers and no regulations whatsoever. As soon as there's a discrepancy between the supply and demand side, like monopolies, cartels, monopsonies the market isn't truly "free".
Then as soon as you regulate the market it isn't truly free. Now for those libertarians out there, or those "no-government is good government" folks on this forum: "Capitalism" as translated into free market doctrine really sucks at morality. Do you agree that child labour ought to be illegal? Are you against slavery? Do you think some oversight should exist as to the circumstances under which labour is performed? If you answer yes to any of those questions, you yourself do not believe in a "free" market.
Similarly, my Constitution's Article 7 is colloquially called the Free Speech article, but really what it states is that Censorship is illegal as long as what you are saying, writing or broadcasting DOES NOT BREAK THE LAW. So the law says that hate-speech, slander and lastly "mis-representation of facts for commercial purposes" are all illegal.
As such, you are totally free to think what you like, but you can't say what you like. By that token: Nobody batted an eye when the Dutch courts forbade an organisation that openly advocated pedophilia. In this case, the consensus is that "free speech" should not be so free, think of the children, etc. But as soon as we are looking at insulting religion, speech should be "free".
Now if we look at the colonialist forces that shaped much of the Muslim world, all the way from Afghanistan to Syria, from Baghdad to Algiers, we should also get a notion of the socio-economic circumstances that arose after our collective (French, English, American and to a degree Belgian) intervention in those areas. And we can then safely conclude that those circumstances are highly conducive for violent crime: There is poverty, no rule of law, borders are haphazardly drawn across cultural and religious boundaries, and 19-35 year old males regularly have no prospect of procreating.
Then quite a few people fled these colonial FUBARs, and settled in Europe. This is about 4.5% of Europe's population, and they have been marginalized, discriminated and even treated with violence. If you look at the amount of violent attacks on mosques in the last 12 years, the list is staggeringly large as compared to attacks on synagogues or papers such as Charlie Hebdo.
So we are dealing with an impoverished population that has residual colonial trauma and is constantly being attacked from all angles, and then we wonder why violent excess enters the picture.
This is a very long winded way of saying that as far as taking the piss at Muslims is concerned, White Privilege becomes part of the equation. We can mock the RC Church more freely, because we are the elite and it is an institute of our own making. However, when we mock Islam we need to be mindful of the socio-economic and power structure we created in which these people survive.
It's akin to the difference between a black US citizen dropping the N-word vis a vis a white middle class male dropping the N-word. We need to be more cautious about viewing the whole picture if we are to solve radicalism in our societies.