I generally wait for them to label themselves. They are itching to do so. Only reason they don't all walk around with their hate symbols on display is because they will damage parts of their lives, like their careers.

Back in the day, when I went to lots of of metal, punk, and industrial shows, nazis, and other WP assholes, would show up to shows. You had 2 choices, drive them out with violence, or end up with a nazi club. People with these types of ideologies only understand that might makes right, the language of which is violence.