SACRAMENTO — As a Ventura County public defender, Liana Johnsson has handled many life-changing cases, but her biggest public crusade these days has been going topless. For months, Johnsson has been fighting to allow topless women at California beaches and parks. A group of lawyers, at Johnsson's request, has asked the Legislature to make topless sunbathing legal, saying the ban is the last criminal sanction that treats women differently than men. The new movement has urgency: Because of a December court ruling, Johnsson and other attorneys contend, women convicted of indecent exposure could find themselves listed as sex offenders under...