It wasn’t just “dominated by the Soviet Union”, it was a front, funded by the Russkies.
That was a Wikipedia piece, so you’d have to expect it wouldn’t be too harsh on the communists, although in the past I have found some pretty good stuff there on communist groups and individuals.
To be honest, I’ve only first heard of most of these things today. But you can bet that I’ll find out a whole lot more about it by the time I’m done.