Fonti utilizzate: https://web.archive.org/web/20150312083259/http:/www.bopeoficial.com/o-batalhao/batalhao/ https://www.ibge.gov.br/en/geosciences/territorial-organization/territorial-typologies/17553-subnormal-agglomerates.html?=&t=o-que-e https://www.cesi-italia.org/en/articles/il-bope-e-la-lotta-al-narcotraffico-nelle-favelas https://www.actionaid.it/informati/notizie/favelas-brasiliane https://theloop.ecpr.eu/bloodthirsty-brazilian-police-are-taking-the-law-into-their-own-hands/ https://www.hrw.org/report/2009/12/08/lethal-force/police-violence-and-public-security-rio-de-janeiro-and-sao-paulo https://www.riotimesonline.com/brazil-news/rio-politics/rio-court-hears-cops-in-amarildo-case/ /watch?v=9rmlGsQ7dxY&t=0 https://www.adnkronos.com/brasile-polizia-militarizzata-occupa-favela-a-rio_61n6xyxRnCMDr6ysBhFKXR https://www.aljazeera.com/news/2015/12/11/elite-rio-police-arrested-for-tipping-off-drug-lords https://www.scmp.com/news/world/article/1890194/brazil-gangbusters-target-elite-police-unit-widening-corruption-probe https://g1.globo.com/sao-paulo/noticia/2016/11/para-57-dos-brasileiros-bandido-bom-e-bandido-morto-diz-datafolha.html
Per chi non lo sapesse Tropa de Elite 1 e 2 sono 2 film ambientanti in questo mondo, ne consiglio la visione, specialmente del primo.