In the former chapel of the Agrarian School buildings two carefully balanced series depict in complementary manner the revolutionary transfer ownership of the land and the biological and geological evolution of the earth, thus conveying Rivera's vision of the one as a counterpart of the other. The whole theme is summarized in two panels on either side of the chapel entrance, one depicting The Agitator (20.12), the other The Blood of the Revolutionary Martyrs Fertilizing the Earth.
In contrast to Rivera's work in the USA, that of Orozco became more rather than less outspoken, notably in the murals painted for the Baker Library of Dartmouth College in Hanover, Massachusetts, in 1932. Orozco was in no way inhibited by the fact that Dartmouth College had become a prestigious East Coast bastion of white Anglo-Saxon privilege despite having been founded specifically to provide education for Native Americans. Indeed the College's equivocal past set the theme: that of a continent characterized by the dualities of its conflicting indigenous and European experiences. Orozco's conception of the American 'ideal’ centered on the myth of Quetzalcoatl and was represented on the two main walls of the library with murals of America's Pre-Columbian civilization confronting post-Cortes America. The final panels in the series show, firstly, a chilly world of puritan conformity with white school-children standing obediently around their straight-laced woman teacher. In contrast, Hispanic or Latin America is represented by a tragic but also potentially heroic world in which the rebel Emiliano Zapata stands as the only upright figure among corrupt politicians and generals (20.13). Orozco said apropos this powerful image that the ‘best representation of Hispanic-American idealism, not as an abstract idea but as accomplished fact, would be, I think, the figure a rebel. After the destruction of the armed revolution (whether against a foreign aggressor or local exploiter or dictator) there remains a triumphant ideal with the chance of realization. If there is any need for expressing in just one sentence the highest ideal of the Hispanic-American here, it would be as follows: “Justice whatever the cost” Zapata is being stabbed in the back by a North American general in Orozco’s mural and significantly, the general is accompanied by some of Zapata's own countrymen as well by foreign businessmen. In the final panel Orozco delivered his deeply pessimistic judgment on modern America. Echoing Quetzalcoatl’s condemnation of his people's worship of false gods, he castigated his contemporaries’ false knowledge and their worship of money and power and the violence of their blind nationalism. As a final gesture of despair he painted in the background a junk heap, the detritus of an industrial and consumer society.