MURMANSK, Russia - Heavy sedatives keep Larisa Arap languishing in a woozy haze at a mental asylum, the victim not of a troubled mind, her family says, but of a Soviet-era practice that continues to muzzle and punish dissent in today's Russia. Earlier this summer, Arap, an activist with former chess champion Garry Kasparov's opposition movement, co-wrote an article that alleged abusive practices at local psychiatric clinics. When Arap appeared at a Murmansk clinic to pick up a routine medical certificate July 5, a doctor called police and had her taken to a local asylum. The doctors handling Arap's case...