The thing to keep in mind here is that the entire basis of Islam is the subjugation of women. That is how they get their men. The rest of it is a smokescreen. Seriously, why would any man choose to be part of a 'religion' that requires you to stick you butt up in the air 5 times a day, grow a beard the length of your car, and tell you how to take a dump. Sounds pretty lousy. Now add to the mix that you get a sex slave you can beat up any time you want, and the 'religion' starts looking much better.
Now Theo comes out with his film, exposing this sham. No wonder he was killed. If you take away the dominance of women, the whole scheme collaspes. Theo had to be killed, and his film squashed - because it was showing all of Europe what kind of monsters they had in their midst.