You might enjoy this
http://www.youtube.com/watch?v=9IstZSgniH8
In there they make some powerful references to the purposes of the raids. It wasn’t about spreading religion , their religion of “peace”, nope, it was about plundering productive people. Destroying lives. killing innocents and raping the women. Stealing the wealth for personal consumption.
The more things change the more they remain the same, Islam hasn't as much changed a single iota from the moment it first spawned from Satan's very bowels. .