"One of the ironies of this is that as terms developed over the first half of the 20th century, 'socialism' (in the sense of socialist parties and so forth) generally became self-identified as socialist over and against the anti-democratic elements of communism which, of course, also claimed the socialist label. Old news for people who know this history but a lot of the most intense anti-communists were socialists, though that can seem odd to those outside these sectarian debates. Indeed, the DSA, which Michael Harrington helped found in 1982, was at the forefront of that element of socialist politics."
Josh Marshall at Talking Points Memo warns against "[t]his vanguard, Marxist-Leninist revolutionary party claptrap" in the Democratic Socialists of America.