The problem with certain lefties is that they spend more time feuding with other left wingers than fighting actual Nazis / Tories / Republicans. They live fantasy lives, chasing an ideological purity which no actual human could ever attain and, being monolithic, is the actual antithesis of Marxism. They are inflexible and intransigent, refusing to work with others unless they pass some litmus test of worthiness that they, and only they, get to decide.
In fact, here’s a handy book Lenin wrote about it all in 1920:
And here it is for the great capitalist price of FREE!
And while I’m on a classics spree, let’s not forget my fave socialist quote:
“The world political situation as a whole is chiefly characterized by a historical crisis of the leadership of the proletariat.”
And by that, I’m not saying the future leadership of the revolution is on Tumblr, I’m saying that while the left is squabbling internally, the right is happily organising and staging attempted coups. It would be funny if they weren’t actual fucking Nazis.