In the case of the hardline radicals and the middle east, the radicals and terrorists do not wear uniforms or sighs distinguishing themselves from peaceful moderates so therefor they all look alike until some start killing us. Not having this distinguishing feature can only make us lump them all in one category and waiting until some start killing is just plain stupid. Not having a clear cut enemy in their culture puts all on the line and seems pretty understandable to me. I cannot make friends with someone if I think he may shove a knife in my back once it's turned.