- Daniel Ellsberg: A former US military analyst who leaked the Pentagon Papers, a top-secret study of the US government's decision-making process regarding the Vietnam War. The Pentagon Papers revealed that the US government had been systematically deceiving the American public about the war, and they helped to turn public opinion against the war.
- Noam Chomsky: A linguist and political activist who was one of the most outspoken critics of the Vietnam War. Chomsky argued that the war was a moral and political disaster, and he called for an immediate withdrawal of US troops from Vietnam.