Protesters demonstrate against Principal Davis at Lincoln High School. Protest sign reads "El respeto al derecho ajeno es la conservación de la paz. Benito Juárez."Lincoln High School was one of the participating schools in the East L.A. walkouts of 1968. The walkouts were protests by Chicano students against inequality in LAUSD high schools ranging from poor facilities and poor education to the underestimation of Mexican-American student capabilities by teachers. Digital surrogate produced from contact sheet scan.