Today marks the birthday of the great muralist artist radical David Alfaro Siqueiros (b. December 29, 1896). Earlier this month, members of the im:arte collective were fortunate enough to attend the “Siqueiros in Los Angeles: Censorship Defied” exhibit held at the Autry National Center museum. Here are a few images taken on the day of the im:arte excursion. The exhibit will end on Jan. 9; make sure to check out this dynamic, visceral, revolutionary art which, as a comrade recently stated, plagiarists/artists-for-sale like Shepard Fairey can’t even touch…