This Day in History: 0000-05-04

4 May – John Wycliffe declared a heretic and his writings banned posthumously by the Council of Constance. Later his remains were exhumed, burned, and cast into the River Swift (1415).
4 May – In one of the most important engagements between the House of York and the House of Lancaster in the Wars of the Roses, Edward IV of York defeated Edward Prince of Wales at the Battle of Tewkesbury (1471).
4 May – During a labor demonstration in Haymarket Square, Chicago, an unknown assailant threw dynamite at police, killing seven police officers and four civilians and injuring scores more (1886).
4 May – Chicago mobster Al Capone began serving an 11-year sentence for tax evasion (1932)
4 May – The Pulitzer Prize for fiction was awarded to Ernest Hemingway for Old Man and the Sea (1953).
4 May – Margaret Thatcher became the first woman to serve as Prime Minister of Great Britain (1979).