I think the opposite is true - because our society is so homogenized, streamlines and rationalized, having an identity is a way of standing out in the crowd, drawing attention and yelling "look at me, I am special." That is why the main thing in adopting an identity is its shock value for the targeted audience - anything from dressing like a slut (not a big deal in cosmopolitan New York, but shocking in a rural Podunk), to rap music, to nazi insignia and uniforms, and yes, to radical views. The more shocking, the better because it draws more attention to the bearer. Just like in any other form of marketing.
Wojtek