well, reality is simply more complicated than fiction.
in reality there is no clear good guys and bad guys. if you see it that way then you are absolutely oversimplifying something.
there can be victims and aggressors, but that doesn't make the victims "good guys". for example, i actually despise so much of what the Palestinian government represents, and yet, they are undeniably the victims. that does not make them good guys.
that concept is too much for most people to contend with. many people, especially conservatives, never grew out of needing everything to be cast in black and white. they can see someone kicked and abused and denigrated their whole life, and still only see them as "bad" for escaping that torment with drugs.
unfortunately there are many resistance movements i could join right now in america, but they're all the wrong kind. they are confederate wannabes that just want the chance to shoot gay and brown people.
if life were a simple as "join the resistance" being generally good advice i would need to be a screaming racist homophobe to do it. i think I'd honestly prefer being killed by the fascists.