Sunday was National Go-Topless Day, or so say the Raelians. Protesting unconstitutional topless gender discrimination, seminude women and men alike gathered at Columbus Circle by Central Park to get something off their chest — basically, that if men can bare their breasts in public, women should be able to, as well. The mammary-exposing movement was founded in 2007 by Rael, leader of the Raelians, a controversial religious group that believes in U.F.O.’s and human cloning. In 2002, the Raelians claimed they had cloned a girl, named Eve.