Nah. The "suburbios" of Guayaquil in Ecuador are worse, particularly the parts over the Estero Salado, the tidal flats that have homes on stilts no running water and only stolen electricity. Sewers drain into the flats, where tides tend to occasionally cleanse the near swamp-like land when they came in high enough.
I had a transmitter site on the edge of one of those areas, and it had to be guarded 24/7 with very big and mean armed thugs.
I've seen slums in Lima ("pueblos nuevos") in my work with the Catholic Church there, and been to plenty of similar places in Mexico City (went several times with the ratings interviewers) and in El Alto, the massive slum with over a million people overlooking La Paz at 13,000 feet AMSL.
El Alto - Wikipedia
Nothing, though, is more disconcerting and troubling than the slums of Guayaquil. And today, they are the center of Ecuador's nearly 4,500 murders a year of which less than 300 are ever cause for arrests.