1956: Ávila, Arizona Mexicans are learning to act white, i.e., not serve Negroes in restaurants
Educating Anglos to acknowledge the white racial status of Mexican  Americans represented a major political goal of the American GI Forum. To become white–and therefore truly American–required members to distance themselves from any association, social or political, with African Americans. When the AGIF News Bulletin, for example, printed an article in 1955 titled “Mexican Americans Favor Negro School Integration,” Manuel Ávila, an active member of AGIF and close personal friend of Hector García, wrote to state chairman Ed Idar that “Anybody reading it can only come to the conclusion [that] we are ready to fight the Negroes’ battles… for sooner or later we are going to have to say which side of the fence we’re on, are we white or not. If we are white, why do we ally with the Negro?” Mexicans were learning to act like white people in Arizona, he reported, where Mexican restaurant owners, who normally served Negroes, had recently placed signs in the windows that Negroes would not be served. If Mexicans refused to serve Negroes, Ávila wrote, Anglo restaurants might begin serving Mexicans. Mexican Americans, he argued, must say to Negroes “I’m White and you can’t come into my restaurant.”
A sympathetic white woman from rural Mississippi, Ruth Slates, who owned a store that served many Mexican and Mexican American cotton pickers, wrote to Dr. García in 1951: “My blood just boils to see these farmers… trying to throw the Spanish kids out of schools… and into negro schools. She pointed out that although some of the “Spanish kids” “hate negroes,” others, unfortunately, “mix with them.” She then advised Dr. García that Mexicans needed a strong leader to teach them “right from wrong,” because some “even marry negros and some white girls.” Slates was giving Dr. García a quick lesson in southern racial protocol: if Mexicans want to be white, then they cannot associate with, much less marry, black folk, and she also implied that marrying white girls, in Mississippi at least, might not be a prudent thing to do. Ruth Slates liked “Spanish kids” and hoped that Dr. García would provide the kind of leadership required, as it is now fashionable to say, to perform whiteness.
Neil Foley, "Partly Colored or Other White: Mexican Americans and Their Problem with the Color Line," in Beyond Black and White: Race, Ethnicity, and Gender in the U.S. South and Southwest
, ed. Stephanie Cole and Alison M. Parker, 123-144 (College Station: Texas A&M University Press, 204), 136-137.