...nowhere are attitudes toward sex and gender quite as elastic as in the far reaches of the southern state of Oaxaca. There, in the indigenous communities around the town of Juchitán, the world is not divided simply into gay and straight. The local Zapotec people have made room for a third category, which they call “muxes” (pronounced MOO-shays) — men who consider themselves women and live in a socially sanctioned netherworld between the two genders...