On May 30, 1431, Joan of Arc, condemned as a heretic, was burned at the stake in Rouen, France.
In 1883, 12 people were trampled to death in a stampede sparked by a rumor that the recently opened Brooklyn Bridge was in danger of collapsing.
In 1922, the Lincoln Memorial in Washington, D.C., was dedicated in a ceremony attended by President Warren G. Harding, Chief Justice William Howard Taft and Robert Todd Lincoln.
In 1937, ten people were killed when police fired on steelworkers demonstrating near the Republic Steel plant in South Chicago.
In 1943, during World War II, American troops secured the Aleutian island of Attu from Japanese forces.
In 1971, the American space probe Mariner 9 blasted off from Cape Kennedy on a journey to Mars.