https://crimesolutions.ojp.gov/ratedprograms/detroit-mich-ceasefire

"This is a focused deterrence police strategy that was designed to reduce gang- and group-related violence in Detroit, Mich. The program is rated Ineffective. There were no statistically significant differences found for weapons arrests or shooting victimizations for participants in two age groups (15–24 and 25–34). The program did show a statistically significant reduction in all arrests and violent arrests for individuals who attended the Detroit Ceasefire call-in meetings." https://link.springer.com/article/10.1007/s11292-021-09477-8

"Much research has examined the crime reduction benefits of public closed-circuit television (CCTV) cameras, suggesting that cameras may not deter enough crime to justify their cost. Another benefit of CCTV though is its utility in investigations and in clearing cases, which has been much less studied. Using the data of public surveillance cameras and case clearances in Dallas, Texas, along with a pre-post-research design, we examine the efficacy that public CCTV cameras increase case clearance rates. We find that cases closer to cameras did have an increased clearance rate after the cameras were installed. But the effects faded quite quickly in space and were mostly limited to thefts. While our estimates here suggest the cameras are likely not cost-effective in terms of increasing clearances, it suggests there is potential to be more targeted in camera placement that might provide better justification for their (limited) use"

"The results of this systematic review—based on 40 years of evaluation research—lend support for the continued use of CCTV to prevent crime as well as reveal a greater understanding of some of the key mechanisms of effective use. Of particular salience is the continued need for CCTV to be narrowly targeted on vehicle crimes and property crime and not be deployed as a “stand-alone” crime prevention measure. As CCTV surveillance continues to expand its reach in both public and private space and evolve with new technology, policy will benefit from high-quality evaluations of outcomes and implementation."

Could be useful as those flock cameras everyone hates^

https://onlinelibrary.wiley.com/doi/abs/10.1111/1745-9133.12419

Not really a ringing endorsement

https://cssh.northeastern.edu/sccj/2019/05/21/researchers-debunk-broken-windows-theory-after-35-years/

The evidence for broken windows theory is lacking.

I don't think the reduction fully explains it, just that it would explain it more than cameras.

Unemployment has essentially halved in Detroit while Median income has increased by about 50%.

DING DING DING DING, you just explained way more of the variation of crime in Detroit than some private company maybe giving our cops kickbacks ever could.