So, you know how BioShock Infinite does that extremely jarring thing of applying the typical lib anticommunist "both sides suck" thought terminating cliché to a slave revolt? That's probably a product of rewrites.

In early interviews, Ken Levine talks about the Vox as "starting as kind of a student movement, working to unionize workers, protect rights of minorities" and an "internationalist movement, a worker's movement". IIRC there's even some vestigial elements of that in the final game, like the red color scheme, and an audio log that unsubtly draws a parallel between the Vox and the khmer rouge, something about going after people with glasses/intellectuals (I might be missremembering this last one, since I couldn't find it by CTRL + F on a transcript).