I'm not defending them, but arguably neither of the two in Star Wars being referenced here should be called that. Maybe the jedi one is, if we consider them a religious group and not a political one (debatable at the point of the attack), because it was a widespread extermination of them. The sand people one was just a mass murder though. There wasn't a systemic extermination of the people, only a large retribution killing of a single group.

Still though, they're close enough that we all know what it's talking about. It's fine.