I have defended the idea of ideology per se and have disparaged the idea that anyone can operate without an ideology. The self-proclaimed non-ideological person is really one who has an implicit and therefore unexamined or underexamined ideology. No one really judges everything case by case as if nothing were related to anything else. We all have principles of some sort.
I know that Dalton Trumbo was alleged to be a member of some chapter of the communist gang. I know that Dalton Trumbo was purported to be on Hollywood’s black list.