A fter peaking in the early 1990s, official measures of violent and property crime rates have dropped to levels not seen since the 1960s. Proportional declines in the most serious offenses have been particularly pronounced. For example, murders/manslaughter per 100,000 declined by more than half, from 9.8 in 1991 to 4.5 in 2014, the lowest recorded murder rate since 1960. The violent crime rate overall fell by approximately half over this period, while overall property crime rates fell by nearly 50 percent. Juxtaposed against this declining crime rate has been an enormous and unprecedented expansion in US correctional populations. Between 1980 and 2013, the prison incarceration rate increased nearly 3.5 times, the jail incarceration rate increased by nearly three times, while the community correction supervision rate (numbers of people on probation or parole per 100,000) increased by 2.6 times. By 2013, roughly 3 percent of the adult population in the United States was under some form of criminal justice supervision. During this time period, the United States transitioned from a nation with an incarceration rate slightly higher than that of western European nations to the nation with the highest incarceration rate in the world.These two coinciding trends present a provocative contrast, illustrating the conflicting manner in which changes in crime and punishment over the past few decades have impacted socioeconomic inequality in the United States. As we will