OP remember that Skinheads are not necessarily related to the fascist/racist movement.
Skinheads originally started as an Anarchist movement and like most things was co-opted by the right.
Boots for instance are still worn by Anti-fascist skin heads such as R.A.S.H. (Red and Anarchist Skinheads).
Its easier to tell by symbols that people wear then by their choice of clothing. If a Skinhead has Obviously Nazi Tattoos then they are Fascists.
If they dont they may be Anti-Fascists.
Fun fact. If you see a Skinhead wearing those boots and the laces are red it means that they have spilled blood.
Learn Nazi Symbols and Slang as a matter of safety. There are a lot of weird ones out their.
And do the same for all leftist groups. You never know when recognizing the sign for a Squat painted on a wall could be useful... Or mistaking a Nazi Symbol for a leftist one could land you in trouble.
Some of them look alike. The squat symbol and the Anti-Fa arrows could be confused for Right symbols to those uneducated about such things.
"It is only by the abolition of the state, by the conquest of perfect liberty by the individual, by free agreement, association, and absolute free federation that we can reach Communism - the possession in common of our social inheritance, and the production in common of all riches." ~Peter Kropotkin
"Let us fight to free the world - to do away with national barriers - to do away with greed, with hate and intolerance. Let us fight for a world of reason, a world where science and progress will lead to all men’s happiness. Soldiers! in the name of democracy, let us all unite!" ~Charles Chaplin
"Communism is Anarchy. You can't regulate or reform your way to communism; it can only be achieved by direct action against state, class and capital."