Good in concept, but swerves off course.
This review will be brutal, but the reason I will be so lengthy is that I think you are talented and skilled, and therefore would benefit from this advice. I think you are good, but need direction. Please read the whole thing before you judge it.
I found the main problem was that the setting seemed too modern. For example, in America during the fifties you would have a hard time finding a guy with long hair and stubble--the guy looks like a member of Nirvana, rather than a plausible communist or liberal of the day.
Although things like your use of the colo0r red over black and white and fighting with conservative henchmen who vaguely resemble Richard Nixon, It seems to call for a chase scene and/or an inquisadorial style hearing before a blank-faced courtroom, and that just never seems to happen. It descends into chaotic violence too often, ignoring the roots of communism in labor unrest, not giving attention to the identities of the red-hunting conservatives, and being politically ambiguous.
I can't identify with the protagonist once he takes up his weapoin and simply joins the meyhem. Unless picking up the weapon demonstrated the tenancy of people to to turn to communism when capitalist America shuns them, it seems politically wrong.
Think about whose story this should be. Are you telling the story of real communists who suffered in America? pure communism died during the 1940s in America, and afterwards you could hardly find a real party member. The people who suffered were those who weren't communists, but were radically liberal and therefore targeted by red-hunters labeling them as such to make them feared and hated. almost none of the targeted were actually communists. You seem to imply the protagonist is a real communist, and make him an anti-american fighter. The real people who killed the red hunters were reasonable people like Edward R. Murrow who revealed it was all just a hoax--the communists in america were just made up; the real authoritarian communists were at work in Russia where they had always been, and America was distracted.
The historical background is flawed, but on the other hand you are a superb artist. What you do get right comes to life in stark colors, and I'm sure your future projects will put your contemporaries to shame. Don't lose hope because you've been critisized, and please don't think I'm just an asshole who doesn't appreciate how hard you've worked. I just hope you will consider this as a reminder to stay on course so you can give your work all the things you have to offer.