Christoph: heheheh....your happy with what happened during the inquisition? They didn't just slaughter and dirve out muslims, they drove out jews too, and some of those jews took refuge in north africa, where they were taken in with open arms..
I can tell you for a fact, having read the koran in arabic I've never come across such a thing... There is a difference between people mis-inturpriting thier holy book, and the holy book actaully telling them to do it...
I'm afarid there is nothing you can do to stop this (unless you want to live in a society will the richer countries will help the poorer one improve thier education systems, and relive them of their opressors...).
As for the crusaders, look at the muslims history, they took an area and gave poeple the choice of either become muslim or pay additional tax (Jizya), which i admit is like a protection racket, but they didn't kill many poeple, mostly becuase they were the first organised army in the arab world and the poeple fighting them weren't (except for the romans and the persains), so there wasn't much difficulty over comming them, and they stuck to what they were toldm, they didn't kill a civilain, a donkey, or even break a plant...Just have a look at what the crusaders did to the poeple in jarusalem...