Remember: bias in, bias out. When data collection fails to include certain communities or locations, any analysis or predictions based on that data will also be infected by bias.

Learn about using police employment and misconduct data housed in the National Police Index and Police Records Access Project, two new databases for use by journalists, attorneys, researchers, and members of the public. We'll be presenting at @ire.org's AccessFest this weekend.

We used LLMs to analyze and extract information from millions of pages about police abuses in California. Then we used human annotation to check and validate our analysis. hrdag.substack.com/p/pulling-ba...

I’m proud of my organization @hrdag.org and my colleagues' courage to speak truth to power. Human rights and evidence must never bend to tyranny.  hrdag.org/2025/10/21/h...

Despite these risks, our staff will continue to support civil society in our collective pursuit of justice. Read our full statement: hrdag.org/in-the-face-...

Today, those rights are under attack. The United States is no longer a place where scientists and civil society can publish and engage in our work without fear of reprisal. This has a chilling effect on those using data to advance justice and accountability.

We are data scientists using rigorous scientific methods and statistical analysis to quantify war crimes and human rights abuses. We have long relied on the protections of the U.S. law to protect our right to publish our research, even when it is unpopular.

HRDAG remains a nonpartisan, nonpolitical organization. Our mission is focused on the Universal Declaration of Human Rights. Today, we denounce violations of human rights occurring in the United States. hrdag.org/in-the-face-...

this was a lot of fun! thanks ‪@plutopia.io‬

"I’m excited to work with a group of researchers that conduct their work with rigor, transparency, and an appreciation for the gravity of the subject matter." - Will Taylor, doctoral student with @umich.edu and HRDAG's newest Data Science Fellow hrdag.org/2025/05/28/d...

“Today’s legal victory sends a crystal-clear message: Americans’ private data stored with the government isn’t the personal playground of unelected billionaires,” Everett Kelley, president of EFF client AFGE, told @bloomberglaw.com.

The vast majority of wrongful convictions in one Louisiana parish are connected to the police failing to share key evidence. We partnered with Innocence Project New Orleans to track and analyze this type of police misconduct data hrdag.org/2025/02/20/i...

Will Taylor, a doctoral student from @umich.edu‬, is joining us for the summer. He'll be using scientific analysis to better understand and interpret human rights violations such as wrongful convictions. Welcome, Will! hrdag.org/2025/05/28/d...

"Science gives us tools to go beyond sampled data and talk more accurately about the world." - Patrick Ball, @hrdag.org's director of research. www.biotechniques.com/computationa...

We are data scientists, statisticians, and computer scientists. We use rigorous scientific methods to analyze and investigate human rights abuses and support partner orgs seeking justice. We believe human rights work benefits from scientific accuracy, and we're grateful to do our part.

"I have learned so much from HRDAG about data collection and documenting harm. It is an honor to support their creative and rigorous team by serving on their board.” - Cynthia Conti-Cook We are so glad to welcome Cynthia. hrdag.org/2025/05/28/a...

One of the great antidotes to fake news and politicized propaganda is statistical analysis of existing datasets using rigorous scientific methods. Learn about our approach to bringing science to understanding history. www.biotechniques.com/computationa...

A few of our recent projects: ✅ Consolidating data to track police misconduct ✅ Co-creating a new tool to track "wandering police officers" who try to avoid accountability by changing jobs ✅ Categorizing evidence of gender-based violence in police interactions Read on: hrdag.org/report/2024-...

More than 75% of wrongful convictions in one parish in Louisiana are connected to the police failing to share key evidence. That's more than twice the national average. We partnered with Innocence Project New Orleans to dig deeper into the data. hrdag.org/2025/02/20/i...

Our data scientists, statisticians, and software developers have traveled to 5 continents. We travel to post-conflict countries, build databases of human rights violations, and conduct rigorous research and analysis to identify the truth. hrdag.org

One third of all Americans killed by strangers are killed by the police. We analyzed overlapping databases to show that, in the U.S., police pose a grave safety threat. Learn about our statistical analysis and read our report, "Violence in Blue": hrdag.org/2020/06/11/v...

We are launching a substack newsletter. Please subscribe and tell your friends. hrdag.substack.com/about

We believe that mathematics and science are powerful tools for standing up for human rights. We use statistics and data analysis to hold perpetrators accountable. Learn more at hrdag.org

This new article in _Chance_ explains how @hrdag.org and our partners use AI to sift massive troves of law enforcement documents to make sense of police reports about use of force. amstat.tandfonline.com/doi/full/10....

Biotechniques published an interview with Patrick Ball, inspired by his John Maddox Prize award. "Meet the data analyst putting the perpetrators of genocide in prison" www.biotechniques.com/computationa...

HRDAG's newsletter: Witnessing Syria on Human Rights Day mailchi.mp/hrdag/2024-yea-5