What defies the typical "shooter" stereotype among most in this larger universe of white boys getting radicalized online is that most, though not all, of the latter (in my experience) are among my most intellectually curious, thoughtful and sensitive students. But, to use Professor Henderson's phraseology, they are not "alphas." Some have friends, even girlfriends, but none of them are part of the "popular" crowd. They are bright, but not "good at school" like the students who end up in your Ivy League courses. At 15 or 16 or 17, they feel (correctly) that they have something to offer the world, but feel they have been locked out of all the paths to success in their narrow world: They'll never be star athletes, or valedictorian, or one of the popular kids.