From the early 1970s, the United States prison and jail population rose roughly fivefold — one of the highest incarceration rates on earth, with stark racial disparities. The scale is undisputed. What serious scholars argue over is causation: how much the rise reflects a genuine surge in crime, how much it reflects deliberate policy choices such as the War on Drugs and mandatory minimums, and whether racial gaps stem from enforcement patterns or other factors. Both causes and remedies remain fiercely contested.
Somewhere around the early 1970s, the United States began locking up its people at a rate that would soon outpace nearly every other nation on earth. Over the next four decades the number behind bars rose roughly fivefold, to about two million. A country with a small fraction of the world's population came to hold a large fraction of its prisoners. The weight fell hardest on Black and poor communities, where a prison record became almost an ordinary stage of life for many young men. Crime had genuinely surged in those decades, and the lockup was partly an answer to real fear. But it was also a choice, made law by law, across both parties. That double truth is the heart of the argument. Was this the price the country paid for safety, or a new system of racial control wearing the language of crime? Serious people still disagree, and the disagreement is the subject.