Can it really be true that most people in jail are legally innocent? How much of mass incarceration is a result of the war on drugs, or the profit motives of private prisons? How has the COVID-19 pandemic changed decisions about how people are punished when they break the law? These essential questions are harder to answer than you might expect. The various government agencies involved in the criminal legal system collect a lot of data, but very little is designed to help policymakers or the public understand what’s going on. As public support for criminal justice reform continues to build — and as the pandemic raises the stakes higher — it’s more important than ever that we get the facts straight and understand the big picture.