Guerrilla, hands down
you got the miners movement who just recently kicked porky's ass out of mars after getting fed up of being mistreated and exploited, then there's the supposed liberators who would come to help, the EDF, but surprise surprise turns out they're fascists and are just as bad as the corporation, they came here to bring their "collaborate with earth" classcuckery; so a vanguard of miners starts a resistance group to remove EDF from the premises and put mars' resources at the service of the workers