This isn't rocket science. It doesn't matter which Kennedy it was. Biden is the only president with a Kennedy bust in his office.
It DOES matter because you insisted it was KEY to understanding which president in the movie represented which president in real life. I take it in the movie it's the JFK bust but Biden has the RFK bust.
I'm not going to see the movie about a non-white intersectional coalition defeating the evil White man and nothing you say will change my mind.
I am curious about one thing. At the very end, in the developing photograph, what is the race and or ethnicity of the solder(s) in the picture.