In an incident the YMCA is calling "a very regrettable scheduling error," kids arriving for an early-morning swim meet Sunday walked into a gender-bending scene of the kind most of them wouldn't be allowed to watch on TV. Several of the kids' angry parents clashed with participants in a transgender fashion show, which had been under way at the New City YMCA since about midnight, resulting in a chaotic melee that was eventually broken up by private security guards and East Chicago District police. A YMCA member had reserved the entire facility, at 1515 N. Halsted, from 11 p.m. Saturday...