They don't say anything for the same reasons I mentioned above. Because islamic organizations such as CAIR have worked hard to create an environment where it's improper to criticize any part of the religion.
You have to look at this from their prospective to understand why for example, ISIS thinks it's ok to rape. The central figure of their religion, Mohammed, had a 6 year old wife. From ages 6 to 9 she would place his genitals between her thighs and rub her against it to achieve orgasm. Then at age 9, while she was still pre-pubescent, he had sex with her.
These aren't fringe allegations that are disputed. These are accepted facts that are paraded by even so called "moderate" Muslims. Their holy books (quran/hadiths) have detailed accounts of this and no major islamic organization has ever disputed their validity.
Ask any Muslim apologist and they will come up with a dozen excuses for why Mohammed did it but no one will ever deny it. They'll tell you things like, it was acceptable at that time, or she was a special exception and allah permitted it, but as far as I'm concerned, any adult male who can become sexually arroused by a small pre pubescent girl is sick, and as a result anything that stems from him is tainted.
I urge you all to independently research the issue for yourselves. Please don't just take my word for it.
Another favorite tactic of islamic apologists is to bring up bad things that people of other religions are supposedly guilty of, whether or not religion was a motivating factor. Again, this is not a denial of the disturbing commands in the quran and hadith, just a distraction to shield islam of any criticism.
I used to believe islam was a religion of peace when I was younger, then I read the quran and hadith myself, read the commentaries by respected mainstream islamic scholars, and learned that the peace is for other muslims only. Everyone else has to convert, be a slave, or die.
We really are looking at the start of World War 3, here. If only western leaders would wake up and realize it before too much of the west is lost. Unfortunately, they all seem to be caught up in a liberal haze of moral relativism and political correctness. I would rather we had some realists who listen to exactly what ISIS (and other islamic groups before them) have been saying, and take them at their words. They believe they're fighting in an apocalyptic war of total conquest to bring about a global caliphate. If we don't start treating that as an existential threat, much in the way we treated communism and fascism in the last century, we are going to be in a lot of trouble. Either we believe that democracy and freedom are worth fighting for, or we don't. It would be nice if we defended our values before too many agents of the enemy are already among us sowing chaos and destruction. As others have pointed out, ISIS is planting just those sorts of agents among the migrants, and since those (real) migrants are not going to assimilate at all, they will be easily convinced to become more fundamentalist and take up the banner of terrorism as well.
Europe should really treat this as the invasion it is, and defend themselves. I'm sure there are some among the migrants who are not merely opportunists seeking an easy life in a gullible country, or terrorist sleeper cells waiting for activation, but are genuine refugees who are fleeing the violence and want to live a life of genuine peace somewhere safe. There are certainly many who call themselves muslim who aren't terribly observant, or have liberal views of their religion and pose no danger whatsoever. There are plenty of who call themselves Christian but only attend church on holidays (if that) and don't know much about the Bible. I'm sure most who call themselves muslim have no interest in jihad. There is no doubt a humanitarian crisis underway in the Middle East, with many genuinely innocent victims who need help. The best help they can get, however, is an overwhelming coalition military response that exterminates the fundamentalists who are responsible for the violence, not just in Syria but across the Middle East, fixing the problem once and for all when liberal muslims are finally able to have an islamic reformation or simply become vaguely secular. I certainly don't relish the idea of World War 3, it will be a horrible bloody mess, but the alternative is they exterminate us. World War 3 has already been declared by the other side!
I don't think Europe will defend itself though. Not until some big things happen, and a lot of people lose their lives in big European cities. The worry of course is that outraged Europeans elect some extremists who aren't so discriminate in their response. Germans in the 1920s and 30s had some legitimate grievances, but the result was Hitler... an overreaction to say the least. Likewise the Russians had legitimate grievances against the Tsars, but the Bolsheviks were far worse. Countries under a great deal of internal stress are quite dangerous to themselves as well as others. Well-meaning leaders should recognize when those stresses are increasing, and take the right steps to relieve them before they get out of hand. The right steps right now would be to deny these migrants entry, stave off the economic and social crises these migrants pose, and instead use their militaries to fight the root of the problem. Unfortunately these well-meaning leaders are blinded by leftist ideology that refuses to see the problem for what it is and react to it rationally.
