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A lot of leftists on social media are Big Mad that DSA required masks at their National Convention.
(hexbear.net)
Of all the things you could critique DSA on, this is the hill you're going to die on? 
DSA deciding to do a mask mandate at this event is unequivocally good and based. Shut the fuck up, you fucking dipshits.
Imagine being this much of a fucking goddamn crybaby about masking. Eat shit, you ableist fucks.
One of the biggest lessons this pandemic has taught me is the astounding number of people for whom leftism is really just performative, and that when push comes to shove, these people will make the biggest fucking stink about having to do something even mildly inconvenient for even a single fucking event or context and show themselves for who they really are.
well you're talking about people who attends DSA convention, only a few true leftists will be there, most are Berniecrats.
The new elected majority to the NPC (highest body in the org) are of the left/marxist side of the DSA. Now of those you have a lot of neokautskyists and the like but they deserve a little more credit than berniecrats.
neokautskyists? Thats even worse. Ignorance by choice is worse than ignorance due to inexperience.
I honestly don't know a whole lot about neokauts (I think they are also pro-lenin? Whatever the politics of cosmonaut magazine are) but from what I have seen the organizational strategies they'll push for are much better than that of "berniecrats".