are difficult to obtain, and in some cases, such as that of Argentina, child prostitution is considered to be on the rise but without reliable statistics. However, it is estimated that there are around 10 million children involved in prostitution worldwide. Note: this is a list of examples; it does not cover every country where child prostitution exists. Demographics The people who buy sex from minors are most often men who try to "rationalize their sexual involvement with children." Though most child prostitutes are girls, advocates point out that boys are also exploited, and that this is often overlooked and more strongly stigmatized. An ECPAT-USA study found that though gay, bisexual, and questioning boys were represented at higher percentage than the general population, the majority of boys in prostitution were heterosexual in sexual orientation despite typically performing homosexual acts. Views Public perception Anthropologist Heather Montgomery writes that society has a largely negative perception of prostitution of children, in part because the children are often viewed as having been abandoned or sold by their parents and families. The International Labour Organization includes the prostitution of children in its list of the "worst forms of child labour". At the 1996 World Congress Against the Commercial Sexual Exploitation of Children it was called "a crime against humanity", "torture", and "slavery". Virginia Kendall, a district judge and expert on child exploitation and human trafficking, and T. Markus Funk, an attorney and law professor, write that the subject is an emotional one and that there are various perspectives about its prevention: Investigative journalist Julian Sher states that widespread stereotypes about the prostitution of children continued into the 1990s, when the first organized opposition arose and police officers began working to dispel common misconceptions. Criminologist Roger Matthews writes that concerns over pedophilia and child sexual abuse, as well as shifting perceptions of youth, led the public to see a sharp difference between prostitution of children and adult prostitution. While the latter is generally frowned upon, the former is seen as intolerable. Additionally, he states, children are increasingly viewed as "innocent" and "pure" and their prostitution as paramount to slavery. Through the shift in attitude, the public began to see minors involved in the sex trade as victims rather than as perpetrators of a crime, needing rehabilitation rather than punishment. Opposition Though campaigns against prostitution of children originated in the 1800s, the first mass protests against the