Platform of the American Anti-Imperialist League
Organized shortly after the end of the Spanish American War in 1899, the Anti-Imperialist League opposed American occupation of Cuba and the Philippines. The League's political platform claims that the "forcible subjugation of any people" is un-American and unjust, and it argues that native populations should be able to govern themselves without interference by outside governments.
Click https://s3.amazonaws.com/saylordotorg-resources/wwwresources/site/wp-content/uploads/2011/07/HIST103-5.4.4.pdf link to open resource.