Take a look at how it was great when it all began (I was a regular Lenin fan), and what remains of those grand hopes that we were going to work out how to save all the movements for human liberation? Possibly only this: Nietzsche's old saw about "battle not with monsters lest ye become a monster". Replicated in Marx's "the ruling ideas of society are the ideas of the ruling class", and L. Ron Hubbard's (!!!) "if you fight an enemy and do not defeat it, you will assume its valence" - i.e. "turn into it".
I think we can boil down all we've usefully learned here to groupthink and tribe-against-tribe logic is the enemy, even if you're the good guys. This is all the more important in the social media era when it's the work of mere seconds to assemble a lynch mob to harass the bad guys into silence or suicide. It is our nature, having grown up in class society, to behave like this. The plus side of this is that reflexivity, humility, and opening to non-ego motivations of action are the only defence, and we must learn them and teach them to each other. And by "ego" we mean the collective ego of being the Good Guys, as well. Tony Cliff was wrong - the only way to actually overcome our enemy is to be asymmetrical to them.
Here are some very recent materials on the subject:
Embrace Your Inner Scientologist
Something I Said
