On the Last Five New York City Mayors and Their Murder Records

 1) Koch (1978 to '89) - 20,056 murders, an average of 1,671 per year, 2) Dinkins (1990 to '93) - 8,340 murders, an average of 2,085 per year, 3) Giuliani (1994 to 2001) - 7,117 murders, an average of 890 per year, 4) Bloomberg (2002 to '13) - 6,184 murders, an average of 515 per year, 5) de Blasio (2014 to '21) - 2,882 murders, an average of 360 per year.
 Clearly the numbers came down under Giuliani and Bloomberg. But they also continued to come down under de Blasio. So either the commie continued the Bloomberg policies, the bangers got tired of slaughtering each other, or he devised a new policy that functioned even better (and if he did, God speed to him). Whatever it was, hopefully it continues (with the recent surge under Adams simply an aberration)..