Amsterdam’s haste is understandable. It may be well policed and eye-poppingly unusual, but the city’s central red light district still feels like a place where women’s hopes go to die. Around 75 percent of the 5,000 to 8,000 prostitutes working in the city are from abroad, and many are believed to have been trafficked. Holland legalized prostitution in 2000 as a way of stopping exploitation, but evidence suggests that more women than ever are being forced into brothels against their will. A study from the London School of Economics published this winter found that in countries where selling sex was decriminalized, human trafficking has increased. While the number of women entering prostitution voluntarily grows under legalization, demand grows yet further, creating a shortfall filled by women trafficked and run by pimps.