I'm really working on a theme right now
Warren Beatty stars as John Reed, an American socialist from the 1910's who edited The Masses, he went to Russia in 1917 and wrote 10 Days the Shook the World about the Bolshevik revolution (which I am reading right now).
It has Jack Nicholson in it as Eugene O'Neill.
It's interspersed with interviews of old as shit socialists who knew Jack Reed and Emma Goldman and went to Russia to fight.
I think a lot of the appeal is how desperately interested in the subject matter I am, but it's definitely worth seeing.