Who Is Killing Mexico's Musicians?

Ioan Grillo for Time: At least 13 musicians have been killed - gunned down, burned or suffocated to death - since June 2006. The violence gained international attention earlier this month when three entertainers were killed in a week: a male singer was kidnapped, throttled and dumped on a road; a trumpeter was found with a bag on his head; and a female singer was shot dead in her hospital bed. (She was being treated for bullet wounds from an earlier shooting.)