November 13, 1887
Bloody Sunday clashes in central London.
Bloody Sunday was the name given to a demonstration against coercion in Ireland and to demand the release from prison of MP William O'Brien, who was imprisoned for incitement as a result of an incident in the Irish Land War. The demonstration was organized by the Social Democratic Federation and the Irish National League. Violent clashes between police and demonstrators resulted in the killing of three protesters and the beating of hundreds more.
January 22, 1905

Shooting workers near the Winter Palace
Bloody Sunday in St. Petersburg, beginning of the 1905 revolution.
Bloody Sunday was a massacre on January 22 [O.S. January 9] 1905 in St. Petersburg, Russia, where unarmed, peaceful demonstrators marching to present a petition to Tsar Nicholas II were gunned down by the Imperial Guard while approaching the city center and the Winter Palace from several gathering points. The shooting did not occur in the Palace Square. Bloody Sunday was an event with grave consequences for the Tsarist regime, as the disregard for ordinary people shown by the massacre undermined support for the state. The events which occurred on this Sunday were assessed by historians, including Lionel Kochan in his book Russia in Revolution 1890-1918 to be one of the key events which led to the eventual Russian Revolution of 1917.
March 7, 1965
A group of 600 civil rights marchers are forcefully broken up in Selma, Alabama.
The Selma to Montgomery marches were three marches in 1965 that marked the political and emotional peak of the American civil rights movement. They grew out of the voting rights movement in Selma, Alabama, launched by local African-Americans who formed the Dallas County Voters League (DCVL). In 1963, the DCVL and organizers from the Student Nonviolent Coordinating Committee (SNCC) began voter-registration work. When white resistance to Black voter registration proved intractable, the DCVL requested the assistance of Martin Luther King, Jr. and the Southern Christian Leadership Conference, who brought many prominent civil rights and civic leaders to support voting rights. The first march took place on March 7, 1965 — "Bloody Sunday" — when 600 civil rights marchers were attacked by state and local police with billy clubs and tear gas. The second march, the following Tuesday, resulted in 2,500 protesters turning around after crossing the Edmund Pettus Bridge.