On this day in 1961, the first Freedom Ride, a form of civil disobedience that defied a de facto ban on segregation in the American South, left Washington D.C., headed for New Orleans, Louisiana.
Image: Freedom Riders preparing to board a bus in Montgomery, Alabama, May 24th, 1961 [britannica.com]
Hu Yepin, born on this day in 1903, was a leftist Chinese writer, poet, playwright, and prominent member of the League of Left-Wing Writers who was assassinated by the Kuomintang government. Hu was also the husband of author Ding Ling.
Image: Hu in 1930 [Wikipedia]
On this day in 1970, the Kent State Massacre took place when the National Guard fired on unarmed Kent State University protesters, causing 13 casualties. Just 10 days later, 2 students were killed by police at Jackson State University.
Image: A Kent State University student reacts to the death of a protester killed by national guardsmen during the anti-war protest. Photograph: Bettmann/Bettmann Archive
The May 4th Movement was a Chinese anti-imperialist and nationalist movement that began on this day in 1919 when more than 4,000 unversity students took to the streets in protest of the Treaty of Versailles.
Image: A 1976 painting by Liang Yulong celebrating the May Fourth Movement. From the Landsberger Collection
Ruth First, born on this day in 1925, was a South African anti-apartheid activist and scholar who was assassinated by the South African police while living in exile in Mozambique.
Image: Ruth First, in 1966, in a promotional image for a film about her detention in South Africa
The Haymarket Affair (also known as the Haymarket massacre) was the bloody aftermath of a bombing that took place on this day in 1886 during a radical labor demonstration demanding an 8 hour day in Chicago, Illinois.
Image: A Harper’s Weekly illustration of the Haymarket Riot from May 15, 1886. A Harper’s Weekly illustration of the Haymarket Riot from May 15, 1886. A Harper’s Weekly illustration of the Haymarket Riot from May 15, 1886. A Harper's Weekly Illustration of the Haymarket Affair, May 15th, 1886