To dream of genocide represents frustration with people or situations that never want to think the same way as you. Permanent measures to prevent opposition or an obstacle from getting in your way ever again. Wanting to give yourself complete freedom to think the way you want to.
Positively, may represent big steps you are taking to permanently stop competing ideas. Never wanting to care about jealousy or a threat ever again.
Negatively, may represent your fear of other people’s different ideas or goals. Powerful jealousy that forces you to take drastic measures. Going too far to eradicate your competition or alternative ideas.