Miami prepares for spike in sex trafficking as Super Bowl comes to town

Every year, the American football season ends with the vast spectacle of the Super Bowl, drawing in celebrity superstars, hugely expensive advertising and 100 million viewers. But the sporting mega-event also has a darker side: a spike in human trafficking, in particular a rise in sexual exploitation. This year, Miami will host the Super Bowl on February 2. The city's authorities are training hotel workers, security guards, Uber drivers and truckers to spot the signs that a person might be a victim of trafficking, and alert police.