The Mendiola massacre, also called Black Thursday by some Filipino journalists, was an incident that took place in  Mendiola Street, San Miguel, Manila, Philippines on January 22, 1987, in which state security forces violently dispersed a farmers' march to Malacañan Palace. Thirteen of the farmers were killed and many wounded when government anti-riot forces opened fire on them. The farmers were demanding fulfillment of the promises made regarding land reform during the Presidential campaign of Cory Aquino, and distribution of lands at no cost to beneficiaries.