"great social evil" by clergymen and major news organizations, but many feminists viewed prostitution as a means of economic independence for women. Estimates of the number of prostitutes in London in the 1850s vary widely, but in his landmark study, Prostitution, William Acton reported an estimation of 8,600 prostitutes in London alone in 1857. The differing views on prostitution have made it difficult to understand its history. Judith Walkowitz has multiple works focusing on the feminist point of view on the topic of prostitution. Many sources blame economic disparities as leading factors in the rise of prostitution, and Walkowitz writes that the demographic within prostitution varied greatly. However, women who struggled financially were much more likely to be prostitutes than those with a secure source of income. Orphaned or half-orphaned women were more likely to turn to prostitution as a means of income. While overcrowding in urban cities and the amount of job opportunities for females were limited, Walkowitz argues that there were other variables that lead women to prostitution. Walkowitz acknowledges that prostitution allowed for women to feel a sense of independence and self-respect. Although many assume that pimps controlled and exploited these prostitutes, some women managed their own clientele and pricing. It is evident that women were exploited by this system, yet Walkowitz says that prostitution was often their opportunity to gain social and economic independence. Prostitution at this time was regarded by women in the profession to be a short-term position, and once they earned enough money, there were hopes that they would move on to a different profession. As previously stated, the arguments for and against prostitution varied greatly from it being perceived as a mortal sin or desperate decision to an independent choice. While there were plenty of people publicly denouncing prostitution in England, there were also others who took opposition to them. One event that sparked a lot of controversy was the implementation of the Contagious Diseases Acts. This was a series of three acts in 1864, 1866 and 1869 that allowed police officers to stop women whom they believed to be prostitutes and force them to be examined. If the suspected woman was found with a venereal disease, they placed the woman into a Lock Hospital. Arguments made against the acts claimed that the regulations were unconstitutional and that they only targeted women. In 1869, a National Association in opposition of the acts