La Matanza was the brutal repression of a peasant insurrection that occurred in El Salvador on this day in 1932, killing ~30,000 people. Among those killed were indigenous chief José Ama and communist revolutionary Farabundo Martí.

Image: The living care for the dead, Sonsonate, El Salvador, 1932. [zinnedproject.org]

On this day in 1905, troops at the Russian Winter Palace fired upon a huge procession of working class demonstrators, killing hundreds. The massacre led to widespread uprisings and sweeping reforms known as the 1905 Russian Revolution.

Image: An engraving from an unknown author, depicting a crowd confronting soldiers outside the Narva Gates on the morning of January 22nd [Wikipedia]