https://www.propublica.org/article/ms-13-immigration-facts-what-trump-administration-gets-wrong
https://en.wikipedia.org/wiki/Mexican_drug_war
https://wearepalermo.com/the-history-of-sicilian-mafia/
https://en.wikipedia.org/wiki/Solntsevskaya_Bratva
https://www.cheatsheet.com/culture/dangerous-gangs-united-states.html/
https://www.gq.com.au/entertainment/film-tv/12-of-the-worlds-deadliest-gangs-ranked-by-profitability/image-gallery/a4302815454843ef30d59dba89a44495
https://foreignpolicy.com/2008/05/08/the-list-the-worlds-most-dangerous-gangs/
https://www.complex.com/pop-culture/2014/04/worlds-most-dangerous-gangs/