125 years ago today the great artist Diego Rivera was born. On his birthday in 1940, he was in San Francisco. Rivera celebrated his birthday by marrying Frida Kahlo for the second time. It’s easy to imagine what Diego and Frida would be doing if they were in San Francisco in 2011. They’d be marching and participating in the Occupy Wall Street movement. Would security let Comrade Diego back inside at the Pacific Stock Exchange to see his own work? Diego Rivera’s first San Francisco mural is inside, “safe” from the prying eyes of the general public and the rabble in the streets.