I think Parenti is an "overall socialist", and he has his criticism of the "communist states", but focuses more on capitalism and its exploitation as it is a lot more important compared to the last 2-3 'socialist' states we have today. He also agrees that Eastern countries (or, basically all countries that had socialist revolutions) had it much better then than now.
He also have a son who is a journalist, as far as I know. Though I'm uncertain what his son's ideology is.