On Monday, a federal judge struck down a portion of Chicago’s gun law that restricts who can obtain a firearm permit. On Tuesday’s Eight Forty-Eight we parse out what this means with Crime Lab Professor Harold Pollack from the University of Chicago. Emma Tai, coordinator for Voices of Youth in Chicago Education (VOYCE), will join WBEZ education reporter Becky Vevea in discussing the trends and traditions of school discipline. And Jim DeRogatis gives his take on the new movie Rock of Ages and revisit movies that rock.