On a serious note, the main reason all these Islamists groups are increasing in numbers is because in our region they tend to replace no money/when nothing is meeting their necessities or comforts with religion (since Muslims are more attached to their beliefs than others) which is leading to brain-washing and resulting to what is happening.
In Europe, you probably steal in South America you probably join some Mafia or street thugs, in States both and so on but in our region religion is our shelter which is the most dangerous thing to commit.
Like Fred also said earlier, our region is fucked up, people don't have the simplest things that they should normally have like: Electricity, gas, food, safe shelters etc, and instead they blame the west and condemn some silly cartoons.