>The problem of both groups is more related to difference in culture rather than religion. In this case hopelessness drives people to situations where religion is used as an excuse. Most never lived their lives according the Quran and never will.
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>So, are you telling me that you think that it is logical for someone to try to get a better life by shooting innocent civilians? Makes no sense to me....

Nope... I'm not saying that. They are not doing it for getting a better life.. They already have given up on that. More about taking revenge on the ones the feel responsible for that. Since that is not a single person, but more a society and culture as a whole, this is the last resort.