Red Faction: Guerrilla takes the action back to Mars. You play as Mason, a revolutionary who is struggling against the (and here I'm assuming, because the story is a little bare at this point) corrupt and vile EDF. Your mission takes place in the Dust section of Mars, where miners and other citizens are oppressed by the gun-toting EDF Forces. They actually are being oppressed. You'll see a few of them harassed, shaken down, and even killed if you wait long enough after starting the game.