[@DeadDrop]Is it that you are looking for an RP involving rebels, or focusing on them? The current iteration of this RP that we have been discussing focuses on a specialist join-operations team dealing with threats like rebels. 

Admittedly, the morality of the Halo universe is a bit interesting, since the UNSC [i]is[/i] pretty much a military dictatorship. The UNSC did officially cede political power back to the UEG in 2553, though they retain much of the entrenched political power they held in the colonies. Not to mention, ONI sort of runs the UEG as a shadow government. There are quite a few moral grey areas that get overshadowed by existential threats to all life in the galaxy.