[Rummyfan]

The film depicts Mao Zedong, responsible for at least 45 million deaths, as a fatherly, thoughtful leader pained by the sacrifices of his soldiers.

Arguably the worst mass murderer in history.

[DuncanWaring]

Actually, it can be said that title belongs to Rachel Carson.

She set in motion a chain of events that led to the banning of DDT, followed by 50 million excess malaria deaths in Africa.