Another criticism is that gated communities offer a false sense of security. Some studies indicate that safety in gated communities may be more illusion than reality and that gated communities in suburban areas of the United States have no less crime than similar non-gated neighborhoods. A commentary in "The New York Times" specifically blames the gated communities for the shooting death of Trayvon Martin as the columnist states that "gated communities churn a vicious cycle by attracting like-minded residents who seek shelter from outsiders and whose physical seclusion then worsens paranoid groupthink against outsiders." In an influential paper, Vanessa Watson includes gated communities within a class of "African urban fantasies": attempts to remake African cities in the vein of Dubai or Singapore. In Watson's analysis, this kind of urban planning prizes exclusionary and self-contained spaces that limit opportunities for interaction between different classes, while worsening marginalization of the urban poor. A study done by Breetzke, Landman & Cohn (2014) had investigated the effect of gated communities on individual's risk of burglary victimization in South Africa. Results shown that not only are gated communities not able to reduce burglary, but even facilitate criminal activities. For both the gated communities and the areas surrounding them, the densities of burglary were found to be four times higher than that of Tshwane. The crime rates did not decrease in areas that were far away from the gated communities. Also, the high risk of burglaries was found consistent in both daytime and night-time. As this research on the effect of gated communities in South Africa reflects a negative correlation between the use of gated communities and crime prevention, the effectiveness of gated communities is in doubt. The closed cities of Russia are different from the gated communities. A limited number of gated communities have long been established for foreigners in various regions of the world:   There are many gated communities in Argentina, especially in Greater Buenos Aires, in the suburb of Pilar, 60 km N of Buenos Aires city, and in other suburban areas, such as Nordelta. Tortugas Country Club was the first gated community developed in Argentina, dating from the 1930s/1940s, but most date from the 1990s, when liberal reforms were consolidated. Since Buenos Aires has been traditionally regarded as a socially integrated city, gated communities have been the subject of research by sociologists. Gated communities are an important way through middle and upper-class people cope with the high levels of violent criminal activity in Greater Buenos Aires.