As a 30 year old man who escaped the Alt-right pipeline, you're not going to be happy about the answer.
All I hear from leftists is how much they hate me for my immutable traits, how much they blame me for everything wrong with the world, how much they want me and everyone who looks like me dead.
Whereas Alt-right types would call me "brother" and welcome me into their ranks so long as I hated the right ways.
Do you understand the difference?
I'm an ally and support equality because I feel it's the morally correct choice to make, but holy fuck is it difficult to reconcile that with the fact that means fighting for a lot of people who see you as the scum of the earth.