Yesterday, I gave a tour of Orange County's endangered Chicano murals to Carol Wells, head of the Center for the Study of Political Graphics, and Timothy Drescher, one of the preeminent mural scholars in the United States. Wells got in contact with me at the Los Angeles Times Festival of Books after reading my op-ed piece in the Times attacking Fullerton City Councilmember Shawn Nelson for mouthing off about the murals on the Lemon Street pedestrian overpass just north of the AMC 20 Theaters com