Evil bastards are always the first in line to do the killing in a budding civil conflict. These guys might be evil, but they're objectively less evil than the media and Australian government. They're just the kind of evil you're allowed to get mad at. For violence that benefits the regime, your indignation would be assuaged with propaganda like "collateral damage" and "isolated incident". And no matter how nasty an act of violence might be, it would be memory-holed by the media at the drop of a hat if it were determined to be politically inconvenient.