On Feb. 21, 1848, Karl Marx and Friedrich Engels published The Communist Manifesto.
On Feb. 21, 1916, the Battle of Verdun began with German bombardment of the city of Verdun, France. For ten months, the longest single engagement of the First World War, German forces attacked the French along a 20-kilometer front crossing the Meuse River. When the battle ended, with no change in the strategic position of either army, the combined death toll was over 300,000 (out of over 700,000 casualties).
On Feb. 21, 1965, Malcolm X was gunned down by rival Black Muslims while addressing his Organization of Afro-American Unity in New York City.