It’s no big secret that the United States has a prison problem. We lock up people at higher rates than any other nation, and there are huge racial disparities in who we lock up. According to a study from The Sentencing Project, in state prisons, African Americans are incarcerated 5 times more than whites. There are lots of reasons for why we may see these racial disparities, including law enforcement practices, crime rates, and punitive sentencing policies. Keeping so many people in prison is really expensive-- it costs about $80 billion dollars a year-- and it contributes to racial inequalities in America. As a result, there’s a big push among both Democrats and Republicans to reform our prison system. And one popular strategy many people advocate for as part of this reform effort are risk assessment tools. The tools use data to predict whether a person will commit a future crime. This video explores how these tools work and some of the controversy surrounding their use.