Thats like saying we need to kill 20% of the prison population because of overcrowding....
Or we should release 20% for the same reason....
Nonsense either way.
Release those imprisoned for marijuana, that would make a HUGE difference in prison population and reduce overcrowding!
Marijuana
The  legalization or decriminalization of marijuana, especially, will  greatly reduce the prison populations. About 85 percent of  marijuana-related arrests are possession arrests. Every day, law  enforcement officials waste their time and our tax dollars by arresting  people merely for possessing the drug. Additionally, U.S. prisons are  full with marijuana offenders, people who have never done anything to  harm anyone else. If marijuana was decriminalized and these "offenders"  set free, there would be more space in our prisons for dangerous,  violent criminals like rapists, child molesters, murderers, and such,  who pose an actual threat to society. The public may never know why the  federal government is so insistent about keeping marijuana illegal, why  it insists upon wasting its scarce prison space on creatures as harmless  as marijuana smokers or why it refuses to acknowledge the plant's  potential benefits.http://www.squidoo.com/prison-overcrowding-is-quickly-becoming-a-major-problem-in-the-united-states
	
 to the law.