Why are so many American's in prison?

The best short video I've seen on the subject. Metrics based. Surprising info that I found fascinating. A few tidbits mentioned:

• There are about 2 million Americans in prison. 75% of those or more are in state prisons (of which slightly under half are being held awaiting trial).

• The overwhelming majority of prisoners are there for violent crimes and have been in prison before. Return customers.

• And no, drug arrests don't account for a large number of this group. Only around 15%. And these folks are trafficers with massive rap sheets.

• How did this all start. From 1960 to the 1990s the US went on a crime spree. For example the murder rate in NYC went up over 600%.

• Chief among the contributors was the ramp in single parent families that preceeded the crime #s by about 10 years. The new dads were gang bangers.