Qing dynasty regent Dorgon issues an edict ordering all Han Chinese men to shave their forehead and braid the rest of their hair into a queue identical to those of the Manchus.
American Civil War: First Battle of Bull Run: At Manassas Junction, Virginia, the first major battle of the war begins and ends in a victory for the Confederate army.
The Troubles: Bloody Friday: The Provisional IRA detonate 22 bombs in central Belfast, Northern Ireland, United Kingdom in the space of 80 minutes, killing nine and injuring 130.