4 June

1989 - Tiananmen Square crackdown

On 4 June 1989, the Chinese army crushed the Tiananmen Square protests in Beijing.

1940 - End of the Dunkirk evacuation

On 4 June 1940, the Dunkirk evacuation ended; Churchill vowed to fight on the beaches.

1783 - First Montgolfier demonstration

On 4 June 1783, the Montgolfier brothers publicly demonstrated their hot-air balloon.