Prediction markets on death are an assassination market. That's why they're against the rules even on Polymarket and Kalshi.

Prediction markets on terrorist attacks and wars are one step back from that, but similar negative side effects are possible. And, regardless of what people are betting on, the corruption incentive appears where it did not previously, resulting in things like this.

(I don't think there's literally an Iranian missile operator opening Polymarket, taking out a position for "missile lands on Israel", and then pressing the launch button, but ultimately that's what uncensored markets with uncensored movement of money would enable)