Source: WTL© photograph taken on-site at the UNAM library in Mexico, D.F. (2007).
Image: Before continuing our tour of the Central Library's mural, we look right from where the last photo was taken to look at the Torre de la Rectoría (university president's offices): see the map in O'Gorman #1 for its location. The base relief mural over the entrance is by David Alfaro Siqueiros (1896-1974), was was a Mexican social realist (i.e., inspired by Soviet esthetic notions) and muralist, who, along with Rivera, Orozco, and O'Gorman, produced large fresco murals like this one, thereby creating the so-called "Mexican Muralist Renaissance".
Humanities questions: What does this mural depict? What does it have to do with a university? To what do the dates refer? How can you tell that the style of this building is in the (international) modernist tradition?