Right at one of the corners of Mexico City's Alameda park is the Museo Mural Diego Rivera. The museum was built specifically for a mural of Diego Rivera that was in a hotel that was damaged during the 1985 earthquakes. That mural is Sueño de una tarde dominical en la Alameda Central (Dream of a Sunday afternoon at the Alameda Central), and pictures dozens of characters that populate Mexico's history and imagination.
These are three shots from the mural, which is too long for a single image with my camera. This one has the Catrina (right in the middle) or death, Frida Kahlo (to the right of the Catrina), Diego Rivera himself (in front of Frida), and "La Revoltosa", one of Rivera's lovers (in yellow, to the right).
The (un)holy Inquisition also hit Mexico, and here's an image of - according to Rivera - the first Jewish woman who fell victim to this horrible period in Mexico and who was burned at the stake.
Finally, a very simple one: a kid enjoying his sandwich (Mexican style, called a "torta") bought on the street.
There's other stuff at the museum. But it's absolutely worth a visit just for this mural alone.