"Half of Tom's friends used to be in the Anti-Nazi league"

Creative Commons Attribution Share AlikeSkinhead - Credit: Ludwig Urning
The Anti Nazi League was set up in 1977 to oppose far-right groups in Britain, and attempt to eradicate fascism, racism and homophobia. Gay men were a particular target of people with extreme beliefs.  

The skinhead look was often associated with racist or homophobic beliefs.