They are viscious but unfortunately, intelligent.They are much smarter than the twin Black gangs, Crips and Bloods. Here on Long Island MS 13 is the most dangerous and successful gang.You’ll never see a mara salvatrucha playing soccer and drinking 40s at 2PM, like the Bloods do with hoops. They’re out working with landscape outfits and home improvement outfits. They get a legit stream of money and scout out possible targets for home invasions. Nassau and Suffolk PDs have had little success penetrating them. So far MS 13 has not become a problem in NYC.My guess is another smart move. They operate in places with overmatched PDs and stay away from large urban depts with a proven track record of success against gangs like the NYPD.