Today in History for August 21st : Soviet coup against Mikhail Gorbachev fails; Exiled revolutionary Leon Trotsky murdered in Mexico; Nat Turner leads a slave

Highlights of this day in history: Soviet coup against Mikhail Gorbachev fails; Exiled revolutionary Leon Trotsky murdered in Mexico; Nat Turner leads a slave rebellion; U.S. flag gets 50th star; Count Basie and singer Kenny Rogers born. (Aug. 21)