For February 21:
1848 - Karl Marx publishes the Communist Manifesto.
1885 - The newly completed Washington Monument is dedicated.
1953 - Francis Crick and James D. Watson discover the structure of the DNA molecule.
1934 - Rue McClanahan, American actress (She's Blanche on The Golden Girls, you philistine.)
1955 - Kelsey Grammer, American actor
1965 - Malcolm X, American black activist (b. 1925)