Marc Krupanski

what have we done

Such awesome news from Camden, NJ. What a turnaround. ZERO homicides last winter - the first time in 50 years. Chief credits new tech, de-escalation training, and community/problem oriented policing. nj.com/camden/2026/03…

Indiana State Police ramp up cold case investigations with new DNA genealogy team @GovBraun pointed to recent funding boosts and early successes for a new formalized cold case unit indianacapitalchronicle.com/2026/03/24/ind…

@KevinARing Two good guys.

Greg and I talk for hours every week. This time, it was recorded.

And please let us know if you would like to run an evaluation! There is a lot of innovation happening on alternative response but we still need evidence as to the effects on public safety. We’re ready to fund efforts to figure this out!

The U.S. has not built enough 🏡homes in over a decade, and the consequences are showing up everywhere. On @VelshiMSNOW, AV’s @jenny_schuetz explains why supply is the core issue and what it will take to fix it. Watch the full @MSNOWNews interview with @velshi: bit.ly/4bJ506a

Beware the notion that there is no law, only power - for it is the heart of totalitarianism.

Did you know that @Arnold_Ventures has a standing RFP for causal research proposals related to crime and the criminal justice system? Send us your ideas! We aim to get you an answer fast (within 3 months). All we need from you is a 3-page LOI that describes the intervention you're testing and the research design you're using. (Link below.)

When it comes to deterrence, certainty matters. Research consistently shows people are more responsive to the likelihood of being caught than the severity of punishment. AV’s @jenniferdoleac discusses the evidence with @bryanrwalsh at @voxdotcom: vox.com/future-perfect…

La localisation du porte-avions français Charles de Gaulle rendue possible grâce à l'imprudence d'un marin utilisant l'application de running Strava, rapporte Le Monde. En faisant son footing sur le pont, il révélait la présence du navire.

Wild to see the Yankees playing two games simultaneously.

Great news out of Alabama. Terrific leadership from @Larry_Stutts @GarlanGudgerJr in creating a new prison oversight pilot program to create transparency and accountability at the Alabama Department of Corrections. alabamaappleseed.org/home-page-upda…

"It was just instinct. I'm trying to get the bad guy." NYPD Chief Aaron Edwards, who has been hailed as a hero for leaping over a barricade and chasing down the Gracie Mansion bombing suspects on Saturday, says he doesn't want that viral picture to be about him: "I want it to be about the day. I want it to be about what we did. I want that picture to be a reminder to New Yorkers that your cops, the members of the NYPD... we're going to be relentless in pursuing justice. There's going to be no obstacles. Nothing's going to stand in our way from protecting New Yorkers"

AV’s @jenniferdoleac highlights how states are driving some of the most encouraging work in public safety, demonstrating that bipartisan and incremental evidence-based reforms can make meaningful progress. Hear more on @TheFP’s @ConvoswColeman: bit.ly/4utxidq @coldxman

More than 30 states have enacted or proposed limits on phones in classrooms, yet research hasn’t kept pace. We’re seeking studies that can credibly answer: Do these policies improve achievement, engagement, and well‑being? For whom? Under what conditions? Learn more about our new Cell Phones RFP and apply: bit.ly/47n9e1L (1/)

I know so many policmakers and practitioners who are desperate for information on which prison programs (if any) are effective. How should facilities use their scarce resources - in terms of staff time and funding? Do existing programs make any difference, in the short term or after release? Traditionally, research in this space has compared inmates who participate in programs (or - worse - complete those programs) with inmates who do not. But it's not random who participates in & completes programs. Those who do were likely encouraged to sign up by case managers, based on their specific needs, or they volunteered based on their motivation to change. Facilities also typically require good behavior in order to participate — this is a way for them to incentivize that good behavior, to keep facilities safer. This is all fine and good, but it means that program participants are different in many ways — most unobservable in the data — that make apples to apples comparisons impossible. If we are comparing motivated, well-behaved people with unmotivated, poorly-behaved people, are we surprised that the former group is less likely to reoffend later? Of course not. We shouldn't attribute differences in future behavior to the program they participated in — but this is what too many researchers do. Enter Steeve Marchand and his colleagues. They are finding and using clever natural experiments to quantify the value-add of various prison programs. I hope others take their methods and apply them in other settings. It's time to get serious about what works in this space, so we can use jail and prison time as the intervention point that it is. Check out my conversation with Steeve for more.

I literally LOL'd when I saw this headline

So basically, companies pay Youtube to show ads and we pay Youtube to not show ads

D.C. police department losing officers to expanding federal agencies washingtonpost.com/dc-md-va/2026/…

These are the kinds of protest photos that instantly become historical record. Amir Balat lighting the bomb in one frame, and an NYPD officer mid-air over the fence in the next, already in pursuit. Rarely do still images preserve both the act itself and the split-second response this clearly.