September 12, 1896: the 13 martyrs of Cavite were executed by Spanish authorities
On September 12, 1896, 13 Filipinos, the "13 martyrs" of Cavite were executed by Spanish authorities at Plaza de Armas near Fort of San Felipe, Cavite City, for joining the Katipunan revolution.
With reports of impending plot against the government, the Spaniards reacted swiftly and harshly resulting in the mass execution of the "13 martyrs".