Early in the Islamic conquests, it wasn't so bad. However, things went south fast. Even the Jews were incorporated into the mix fairly nicely, since they were “of the book”.
That's certainly no longer the case. Unearned wealth, coupled with relatively uneducated populations has resulted in some crazy contemporary Islamic populations. That, and some truly mind boggling inbreeding (but that's another story). All told, Arabic Islam is living through their own version of the dark ages, and afflicting themselves on innocent populations just like they did on the Hindus and Sikhs of India. Even though they were invaded over a thousand years ago, they are still viewed as the boogey men by those populations.