When I was teaching high school, I used to try to give some life lessons. One of them was on uniforms. In the literal sense, wearing a uniform (as in the military) tells someone a whole lot about you. In our lives, we all wear uniforms. They are less formal than in the military, but they tell the public a lot about you. I told my students that everyone wears a uniform of their choosing, and people will judge who you are by the uniform you choose to wear. The uniform is your clothing, your hair style, your actions, and everything else you make public about yourself.
So this young man has concocted a uniform of the clothes he wears, his hairstyle, his actions, and the pictures he chose to put on FaceBook. He is telling the world how to judge him. When I look at that compilation of clues, I judge him first to be a skinhead, a young racist actively pushing his extremist views upon the world. I further judge him beyond that, when I see him display photos of guns on his FaceBook site (seriously--why are you so proud of your guns that you post them on FaceBook?) and when I see his photos of animal cruelty, I judge him to be a disturbed individual. No, I don't know him personally, so perhaps I am leaping to conclusions, but I am making a rational judgment based on the uniform he was wearing, and that uniform was one of his own choosing.
He is being judged by the public at large, but he is being judged by the clues he chose to provide.