How would you describe the oil paintings by the artist Diego Rivera?

I was looking at the oil paintings of Diego Rivera - http://www.overstockart.com/diegorivera.html and I was wondering how would you define his art? is he a Modern artist? Art-Deco? what Ganera and style would you categorize his art?How would you describe the oil paintings by the artist Diego Rivera?
Diego Rivera (December 8, 1886 鈥?November 24, 1957), was a cubist Mexican painter and muralist. He began to experiment with fresco painting on large walls. Rivera soon developed his own style of large, simplified figures and bold colours. Many of his murals deal symbolically with Mexican society and thought after the country's 1910 Revolution. His art, in a fashion similar to the stellae of the Maya tell stories. [#1]





By 1913 Diego Rivera was fascinated by the early cubist movement, led by celebrated Spaniard Pablo Picasso, and started experimenting with cubism himself. By 1914 Diego was viewed as one of the more interesting members of the Cubist movement, one of the avant garde. [#2]How would you describe the oil paintings by the artist Diego Rivera?
I've been on a hiatus from art for some time, just recently trying to recapture some of the lost skills; I haven't heard the name of Diego Rivera in many years! Goodness, if I recall correctly, he was what I would characterize as a Social Realist Muralist. Of course, this is my humble opinion and I may be entirely wrong. Great style, great images.
He was a Muralist, but he can be best classified as one the Mxican Reaissance artists, such as Frida Kahlo, Miguel Cabrera, and Jose Clemente Orozco. He was also a Socal Realist, and for a period of time a Cubist too.

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