Human trafficking
The problems against anti-trafficking raids are related to the problem of the trafficking concept itself, as raids' purpose of fighting sex trafficking may be conflated with fighting prostitution. The Trafficking Victims Protection Re-authorization Act of 2005 (TVPRA) gives state and local law enforcement funding to prosecute customers of commercial sex, therefore some law enforcement agencies make no distinction between prostitution and sex trafficking. One study interviewed women who have experienced law enforcement operations as sex workers and found that during these raids meant to combat human trafficking, none of the women were ever identified as trafficking victims, and only one woman was asked whether she was coerced into sex work. The conflation of trafficking with prostitution, then, does not serve to adequately identify trafficking and help the victims. Raids are also problematic in that the women involved were most likely unclear about who was conducting the raid, what the purpose of the raid was, and what the outcomes of the raid would be.
Sex worker
While demographic characteristics of sex workers vary by region and are hard to measure, some studies have attempted to estimate the composition of the sex work communities in various places. For example, one study of sex work in Tijuana, Mexico found that the majority of sex workers there are young, female and heterosexual. Many of these studies attempt to use smaller samples of sex workers and pimps in order to extrapolate about larger populations of sex workers. One report on the underground sex trade in the United States used known data on the illegal drug and weapon trades and interviews with sex workers and pimps in order to draw conclusions about the number of sex workers in eight American cities. However, studies like this one can come under scrutiny for a perceived emphasis on the activities and perspectives of pimps rather than those of sex workers themselves. Another criticism is that sex trafficking may not be adequately assessed in its relation to sex work in these studies.