On July 15, 1881, the Massacre of the Innocents occurred when the Workers' Coalition, the political arm of the Moralista guerrilla movement, held its national convention in Palenque, the capital city of the Mexican state of Chiapas. The convention was raided by the Constabulary, and a riot broke out among the delegates. The riot turned into a panic-stricken flight by the delegates when the Constabulary agents opened fire on them. By the time the hall had been cleared, twenty-three Coalitionists were dead, including Coalition leader José Godoy. An additional seventy-give people were badly injured, including ten Constabulary agents.
On July 15, 1899, the Great Northern War between Mexico and the Russian Empire continued, as the Mexican Pacific Fleet occupied the Siberian port city of Okhotsk. Although Sobel does not specifically say so, the news presumably worsened the Starkist Terror in the Confederation of North America.
On July 15, 1914, the Hundred Day War between Mexico and France continued as the French force occupying the Mexican port city of Tampico received reinforcements.