Bronze race is a term adopted in 1960s by Chicano ethnic group MEChA to refer to the Latinos in the United States and the people in Mexico as a unified "race", similar to the black and white races. In this sense it is largely synonymous to the notion of the Chicano nation. The decision to call it a separate race may have been influenced by the contemporary negative views of "ethic" or "nation" based nationalism and positive views of "race" based nationalism. The notion was first enunciated in the Plan Espiritual de Aztlan document.
However, the Spanish cognate Raza de Bronce predates MEChA by half a century or more. See José Vasconcelos (indigenismo) (Mexico, 1925), La Raza Cósmica, and Alcides Arguedas (Bolivia, 1919) La Raza de Bronce.
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