Earlier quoted context omitted.
Drug crimes cover only 16% of inmates in US state prisons [1]. It's higher in Federal institutions, but that's only about 15% of total inmates. I don't disagree that many drug offenders probably shouldn't be in jail, but the US could release all of them and we'd still have the highest incarceration rate in the world. [1] http://www.bjs.gov/content/pub/pdf/p13.pdf (table 13)
Take another look at this data from same source regarding Federal instead of State: Half of males (50%) and more than half of females (59%) in federal prison were serving time for drug offenses on September 30, 2014. [1] [1] http://www.bjs.gov/content/pub/pdf/p14.pdf How many started that way or their crime involved weapons/money that were involved in a drug operation? How many repeat or lifetime criminals were first…
If we let out our non-violent criminals, then the prison population will only be cut by half. The majority of people in prison are violent criminals.