The Tres Grandes were products of the "Porfiriato", the pre-revolutionary society that flourished under the 30 year dictatorship of Porfirio Diaz. Diaz's administration crumbled from within in 1911 and fled to Europe. The Mexican Revolution had begun just a year before and the world of art brought forth muralism as we know it today.
The murals represented the social ideas of the revolution. The Mexican muralists painted all over the world impacting Mexicans and non-Mexicans alike. Siqueiros stated that the goal of mural painting was to, "direct itself to the native races humiliated for centuries; to the officers made into hangmen by their officers, to the peasants and workers scourged by the rich". Siqueiros believed that "art must no longer be the expression of individual satisfaction which it is today, but should aim to become a fighting educative art for all."
Siqueiros was a great influence on other artists. Mexican muralism is thought of as the only "genuine" Latin American art of the 20th century. Muralism played a primary role in the development of a national Mexican art embracing its native indigenous Indian roots and educating the poor masses of the populations.
In many ways, the variety of races and intermixing marriages brought strength and inspiration to art and inspired a whole new generation of artists around the world. The Tres Grandes were similar in that regard yet all had their own unique style...