In red color are drug treatment facilities. In black are arrest records
The map above shows the prevalence of certain reported violent felonies—homicides, robberies, and felony assaults in upper Manhattan. The areas with the highest reported violent crime rates are in areas of the South Bronx, portions of Harlem, Norwood to Wakefield in the North Bronx, and portions of central and east Brooklyn, all of which have predominantly Black or Hispanic populations. Smaller areas that also have high rates of community violence are on the north shore of Staten Island, Coney Island, Queensbridge, Jamaica, and the Rockaways. Midtown Manhattan and Downtown Brooklyn have elevated rates of NYPD complaints due to their high volume of daily visitors; it is therefore less likely that residents of these areas experience crime in the same way or to the same degree as residents of other, more residential neighborhoods that are predominantly communities of color, such as the Melrose and Mott Haven neighborhoods of the Bronx and Brownsville and East New York in Brooklyn.
Given these highly unequal spatial patterns of violent crime, Black and Hispanic New Yorkers have the highest rates of exposure to violent felony crimes near their homes in communities like Harlem and East Harlem.
From: https://www1.nyc.gov/assets/hpd/downloads/pdfs/wwl-plan.pdf
Examples of drug related arrests
2020 Dec : 14 drug dealers arrested (iRadio)
2019 Apr: 20M In Narcotics Found In Harlem (Patch)
2019 Mar : This block in Harlem has become ‘flea market for drugs’ (NY Post)
2019 Feb : Charged in drug dealing on 123 street near 5 schools (NY Daily News)
2015 Sept : 19 men associated with drug dealing have been indicted (The Epoch Times)
2011 Feb : More than a dozen busted for drug dealing on 137 Street (NY Daily News)