I had lunch with a friend yesterday and I promised him that I’d dig up the violent crime figures for New York City. Here they are:

This chart alone should provide you with pretty good clues to the answers to these questions:

  1. Did David Dinkins have a pretty good record on crime?
  2. Was Rudy Giuliani’s adoption of broken windows policing responsible for NYC’s crime decline in the 90s?
  3. Did Mike Bloomberg’s stop-and-frisk policing reduce crime in the 2000s?
  4. Did Bill de Blasio preside over an upsurge in crime in the aughts?

Here are the answers:

  1. Yes: violent crime declined 20 percent on his watch. But nobody knew it at the time because no figures later than 1991 were available during the 1993 mayoral race.
  2. No. Nothing special happened to the crime rate when Giuliani took over. Violent crime was already declining strongly when he became mayor and continued declining after he left. There’s no reason to think that Giuliani had any special impact.
  3. No. Violent crime declined only modestly during his three terms in office.
  4. No. Stop-and-frisk ended and nothing happened. Violent crime stayed low.

Conversely, the lead-crime hypothesis predicts very precisely that violent crime should peak right around 1991 and then decline through 2010 as more and more birth cohorts are raised in a lead-free environment.¹ By 2010 an entire generation has reached its most crime-prone years after being raised in a lead-free environment and there are few improvements to be expected going forward. And that’s exactly what happened.

¹Mostly lead free, anyway.

MOTHER JONES NEEDS YOUR HELP

Straight to the point: Donations have been concerningly slow for our hugely important First $500,000 fundraising campaign. We urgently need your help, and a lot of help, over the next few weeks so we can pay for the one-of-a-kind journalism you get from us.

Learn more in “Less Dreading, More Doing,” where we lay out this wild moment and how we can keep charging hard for you. And please help if you can: $5, $50, or $500—every gift from every person truly matters right now.

payment methods

MOTHER JONES NEEDS YOUR HELP

Straight to the point: Donations have been concerningly slow for our hugely important First $500,000 fundraising campaign. We urgently need your help, and a lot of help, over the next few weeks so we can pay for the one-of-a-kind journalism you get from us.

Learn more in “Less Dreading, More Doing,” where we lay out this wild moment and how we can keep charging hard for you. And please help if you can: $5, $50, or $500—every gift from every person truly matters right now.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate