Well, here's some nice stats for you.
The US prison population (as in currently in jail) around 2 million people. It has nearly tripled over the last 17 years. It is around a quarter of the global prison population.
That works out to around 470 prison inmates per 100,000 U.S. residents -- up from 292 at yearend 1990.
Around 1.3 million of these people are incarcerated for non-violent offences, many as a result of the 'three strikes and you're out' policy.
At yearend 2001 there were 3,535 sentenced black male prisoners per 100,000 black males in the United States, compared to 1,177 sentenced Hispanic male inmates per 100,000 Hispanic males and 462 white male inmates per 100,000 white males.
I'd criticise on the last point but Australia has the same appalling over-representation of Aboriginals in our prison population.
Scary, isn't it?