On this day in 1962, a confrontation between pro-Brezhnev and anti-Brezhnev demonstrators in Leningrad escalated into a full-scale riot, forcing Soviet authorities to declare martial law in that city.

Meanwhile, in Cuba, the late Fidel Castro's old comrade-in-arms Ernesto 'Che' Guevara was sworn in as the new Cuban president and vowed to avenge Castro's assassination.