Wikipedia:Selected anniversaries/May 4
May 4: Independence Day in Latvia (1990), Remembrance of the Dead in the Netherlands .
- 1471 - Wars of the Roses: Yorkist Edward IV defeated a Lancastrian army in the Battle of Tewkesbury (pictured).
- 1855 - William Walker and a group of mercenaries sailed from San Francisco to conquer Nicaragua.
- 1886 - A bomb exploded near the police line, turning a peaceful labor rally in Chicago into the Haymarket Riot.
- 1919 - The May Fourth Movement began in China with large-scale student demonstrations in Tiananmen Square, Peking against the Paris Peace Conference and Japan's Twenty-One Demands.
- 1953 - Ernest Hemingway was awarded the Pulitzer Prize for The Old Man and the Sea.