Why are they in prison?

When I saw this chart showing why people are in federal prisons, I was surprised. Drug crimes are by far the most common crime resulting in a federal prison sentence. However, I disagree with those who say drug crimes are victimless crimes. I worked too many years as a child protection caseworker to accept that fallacy.
Read more here: http://mjperry.blogspot.com/2012/07/chart-of-day-federal-drug-prisoners.html
via Coyote Blog