The U.S. Department of Justice (DOJ) reports 2.2 million people are in our nation's jails and prisons and another 4.5 million people are on probation or parole in the U.S., totaling 6.8 million people, one of every 35 adults. We are far and away the world leader in putting our own people in jail. Most of the people inside are poor and Black. Here are 40 reasons why.