From Wikipedia, the free encyclopedia.
Bloody Sunday, London, England, 13 November, 1887 was a demonstration against coercion in Ireland and to demand the release from prison of MP William O'Brien. The demonstration was organised by the Radical Federation.
Some 10,000 marchers approached Trafalgar Square from several different directions, led by (among others) John Burns, Annie Besant and Robert Cunninghame-Graham.
Two thousand police and 400 troops were deployed to halt the demonstration but in the ensuing clashes many people were so badly beaten they required hospital treatment; Burns and Cunninghame-Graham were arrested and imprisoned for six weeks.

