What messages were usually depicted in mexican murals

A variety of messages

Explanation:

Mainly political messages alongside social messages, pioneered by 3 artists Diego Rivera, Jose Orozco and David Siqueros. These murals were movements due to the Mexican Revolution and the new government that was formed because of it.

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.