Tumbrels and quicklime pits will do nicely. Earth’s 8.3 billion people include 3,428 billionaires who exploit & often kill us. "We live in capitalism. Its power seems inescapable. So did the divine right of kings. Any human power can be resisted and changed by human beings." - Ursula K Le Guin
Ursula K. Le Guin — National Book Foundation Medal: Ursula's Acceptance Speechwww.ursulakleguin.com