Look to history for guidance. What did Genghis Khan do with a few mounted archers?
And no, education is not the answer. Know why? Aafia Siddiqui is why.
The answer is to squelch, stamp out, and otherwise eradicate evil ideologies, even if it means killing a few people that hold them.
No, it isn't pretty. Nobody says it has to be. Lots of things in life are dirty jobs. You still gotta do them.