THE MAN WITHOUT A MASK: Filmmaker Roger Ross Williams (God Loves Uganda; Life, Animated) profiles Cassandro, the flamboyant gay star of Mexican wrestling. SYMBOLS AND FACTS: GUNS, CARS, AND AMERICA: An essay by Adam Gopnik. BRAZENHEAD, C'EST MOI: Michael Seidenberg operated a secret bookstore in a Manhattan apartment...until he got an eviction notice. CARTOONS by Roz Chast and Farley Katz.