Diego Rivera is filed under Mexico — the murals, the politics, Frida Kahlo — and the filing loses his first career. From 1909 to 1920 Rivera was a Montparnasse painter, and from 1913 one of the more serious Cubists in Paris: dense, inventive canvases that hung beside the movement's founders, painted at addresses including 26 rue du Départ, the building where Piet Mondrian also worked. Amedeo Modigliani, a friend and neighbour, painted his portrait in 1914.
The Paris career ended in a fistfight of words — the 1917 'affaire Rivera', a public break with the critic Pierre Reverdy that took him out of the Cubist circle — and in a discovery: a 1920–21 trip through Italy's fresco cycles showed him what wall painting could do. He sailed home in 1921, and the Mexican mural renaissance followed. The eleven Paris years are the training the murals stand on.