The cable debut of 9500 Liberty will be Sunday, Sept. 26th, at 8 p.m. (ET/PT) on MTV2, mtvU (MTV’s 24-hour college network), and Tr3s: MTV, Música y Más (formerly MTV Tr3s) as part of Hispanic Heritage Month. The critically acclaimed documentary, 9500 Liberty, is directed by Annabel Park and Eric Byler ’94 and chronicles the social, political, and economic impact of The Immigration Resolution, a law closely resembling Arizona’s SB 1070 that was briefly implemented in a Virginia county in 2008. “The decisions our elected representatives make on immigration reform now will impact our audience for generations,” said Stephen Friedman…