The filipino genocide
https://scholarcommons.scu.edu/historical-perspectives/vol21/iss1/6/?utm_source=scholarcommons.scu.edu%2Fhistorical-perspectives%2Fvol21%2Fiss1%2F6&utm_medium=PDF&utm_campaign=PDFCoverPages
https://en.wikipedia.org/wiki/Spanish_language_in_the_Philippines#Filipino_nationalism_and_19th_century_revolutionary_governments
Philippines: Land of Broken Promises (New York, 1998), one-sixth of the total population of Filipinos or about 1.5 million died as a direct result of the war.[6][41][42][43]
https://en.wikipedia.org/wiki/Spanish_language_in_the_Philippines#Philippine%E2%80%93American_War