An example that people choose their beliefs based on the social group they identify with, not based on rational criteria. What makes the social group believe a certain set of beliefs is they are often founded on a schizoid typal personality who has contradictory beliefs.
It is not radical Muslims that are a problem as oppose to normal Muslims. It is the whole "meme" The difference between a Catholic nun and radical Muslim is in what they believe in. Not amount of fervor they believe in it.
See this how-radical-muslims-will-get-nukes
