In the opening when they introduce him they do say the word socialism like right away and have the Marx quote (to each etc) on the board and quote Mao but it's kind of not the focus, like someone who's a teenager watching this isn't going to come away knowing what those names mean or stand for. The message is framed as fighting for 'equality (destroying the systems that keep people down along class and race lines, end of oppression might be the better way to put it)', 'uniting and working together to fight the system', and that the government has no problem destroying anyone, especially black people which especially inflames paranoia J.Edgar as shown etc, who present a threat. I'm sure a more coherent analysis of it will be written lol, I mean the gestures are better than nothing and I'm not sure how much further it could have gone while staying firmly in the thriller genre.