Felicitas Mendez was a Puerto Rican activist who fought, along with her husband Gonzalo, to desegregate California's schools so that Hispanic and Mexican-American children could no longer be excluded from the better-resourced "whites only" schools. Their 1946 victory in Mendez v. Westminster resulted in California being the first U.S. state to desegregate its schools and, in many ways, paved the way for the Brown v. Board of Education Supreme Court victory that ended school segregation across the entire United States in 1954. https://en.wikipedia.org/wiki/Felicitas_M%C3%A9ndez