They're blocked because they're tankies, not because they're left (I'm not even sure tankies can be considered left wing, as much as they claim to be).
(And others because of trolling; and others yet haven't been blocked, they defederated themselves.)
— @IamRageSparkle, 2020, on the microblogging site that later let the fascists in.
— Karl Popper, 1945