On this day in 1984, the Bhopal Disaster began when a gas leak exposed more than 500,000 to highly toxic methyl isocyanate gas. Thousands choked to death overnight on the gas, which disproportionately affected children due to its density.
On this day in 1859, the U.S. government executed John Brown for his failed raid on a federal armory in Harpers Ferry, Virginia. For attempting to liberate enslaved people, Brown became the first American to be executed for treason.
On this day in 1980, 4 Catholic missionaries from the U.S. working in El Salvador were raped and murdered by 5 members of the El Salvador National Guard. The murders led to international outrage against both the U.S. and El Salvador.