CBS and the producers of Big Brother (8 p.m., Ch. 2) did the right thing, but couldn't bring themselves to do it for the right reasons.The show finally revealed the racist, homophobic behavior of some of the contestants in Sunday's episodes - after it became an issue in the press. (Viewers of the 24-hour live feed from inside the "BB" house had chronicled the bad behavior, which led to two of the contestants to getting fired from their regular jobs.)But both the show's host, Julie Chen, and producer Allison Grodner have continued to insist that the info was revealed only because it became part of the "story" of what's going on in the competition on the show.That's patently ridiculous. Comments made days earlier were not an issue.And the fact remains that hiding the anti-gay, anti-Asian, anti-black, anti-woman behavior warps the reality of what's supposed to be a reality show.Elsewhere on TV ...America's Got Talent (7 p.m., NBC/Ch. 5): Auditions continue.So You Think You Can Dance (7 p.m., Fox/Ch. 13): The top 18 perform; two are eliminated.Rizzoli & Isles (7 and 9 p.m. TNT): A body is discovered in a church.Frontline (8 p.m., PBS/Ch. 7): Two working families in Milwaukee struggle to keep their homes, jobs, health insurance, and to build a future for their children.Perception (8 and 10 p.m., TNT): A serial killer is trying to send Pierce a message.Pretty Little Liars (9 p.m., ABC Family): Hanna finds something shocking i her mother's possession.CONCACAF Gold Cup Soccer (9 p.m,. Fox Soccer Channel): USA vs. BelizeFrontline (9 p.m., PBS/Ch. 7): A report titled "Two American Families" follows working-class families in Milwaukee as they struggle to keep their homes, jobs and health insurance, and to build a future for their children.Twisted (10 p.m., ABC Family): Danny's appearance upsets some people in town.