After President Nixon's trip to China, Mao Zedong, the Chairman of the Chinese Communist Party, was rioting against Nixon.
Mao and Nixon recently gave each other a handshake, while really, both intended it to lead into murder, but the United Nations was nearby and neither wanted to get in trouble.
Nixon grimaced, flashing his sharp pearly white teeth to intimidate Mao, while Mao had a look saying that Nixon was a crazy American nutcase.
Mao later said he hated that man.
Nixon later said that he hated Mao all along.