The whole "anti-fascist" movement is just attention seeking and people who want to have a bit of a jolly old time rioting.
It's nothing more than that.
We wouldn't "join" the so-called "anti-fascists" any more than you'd join the Hitler Youth.
They are not a good cause. They're a bunch of loons, anarchists, and thugs. There is no good work done by self-identifying "Antifa", anywhere.
As I see it, "Antifa" and the "Neo-Nazis" are just two groups of thugs, a bit like "ultra" football hooligans. Both groups hate the other, and both are just idiots and thugs. The same drama plays out in football terraces the world over.