ON the night of Sept. 19, military leaders in Thailand suspended the constitution, seized control of Bangkok and imposed martial law. Someone forgot to tell the lesbians. Several nights after the nonviolent coup, a crush of cheering women crowded around the stage at Shela, a lesbian nightclub near the city's major downtown park, Lumpini, where a popular singer, Palmy, was performing. Fans crammed the balcony, imported whiskey was flowing at every table and a lone tom, local slang for a butch lesbian, was dancing by herself behind the pool table. Coup or not, it was just another night out for...