What time period was this movement not a problem?
I meant pre 1953 or so. Even maintream best selling writers like Sinclair Lewis, Theodore Dreiser and John Steinbeck would be openly socialist if not communist back then. It was just more accepted in the wake of the Depression and before Soviet atrocities were known. And after they were known even a flat out Commie like Woody Guthrie stopped supporting the U.S.S.R.