The Exponential Growth Of American Incarceration, In Three Graphs

The Prison Policy Initiative released a deluge of data Wednesday on United States prison population rates. The main take-away of the data is nothing new: The U.S. prison population is the highest in the world, and has grown exponentially since the 1970s, tracking the rise of the so-called War on Drugs.
But for all the talk these past few months about the federal prison population — and the concerns there are urgent — these charts call out the major perpetrators of the prison explosion: the states, where incarceration rates have increased more than fourfold:

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