but was harder to prove. One case that dealt with marriage, sex, and gender was the trial of Eleno de Céspedes. Non-religious crimes Despite popular belief, the role of the Inquisition as a mainly religious institution, or religious in nature at all, is contested at best. Its main function was that of private police for the Crown with jurisdiction to enforce the law in those crimes that took place in the private sphere of life. The notion of religion and civil law being separate is a modern construction and made no sense in the 15th century, so there was no difference between breaking a law regarding religion and breaking a law regarding tax collection. The difference between them is a modern projection the institution itself did not have. As such, the Inquisition was the prosecutor (in some cases the only prosecutor) of any crimes that could be perpetrated without the public taking notice (mainly domestic crimes, crimes against the weakest members of society, administrative crimes and forgeries, organized crime, and crimes against the Crown). Examples include crimes associated with sexual or family relations such as rape and sexual violence (the Inquisition was the first and only body who punished it across the nation), bestiality, pedophilia (often overlapping with sodomy), incest, child abuse or neglect and (as discussed) bigamy. Non-religious crimes also included procurement (not prostitution), human trafficking, smuggling, forgery or falsification of currency, documents or signatures, tax fraud (many religious crimes were considered subdivisions of this one), illegal weapons, swindles, disrespect to the Crown or its institutions (the Inquisition included, but also the church, the guard, and the kings themselves), espionage for a foreign power, conspiracy, treason. The non-religious crimes processed by the Inquisition accounted for a considerable percentage of its total investigations and are often hard to separate in the statistics, even when documentation is available. The line between religious and non-religious crimes did not exist in 15th century Spain as legal concept. Many of the crimes listed here and some of the religious crimes listed in previous sections were contemplated under the same article. For example, "sodomy" included paedophilia as a subtype. Often part of the data given for prosecution of male homosexuality corresponds to convictions for paedophilia, not adult homosexuality. In other cases, religious and non-religious crimes were seen as distinct but equivalent. The treatment of public blasphemy and street swindlers was similar (since in both cases