At any given time, roughly 480,000 people sit in America's local jails awaiting their day in court, according to an estimate by the International Centre for Prison Studies. These are people who have been charged with a crime, but not convicted. They remain innocent in the eyes of the law. Three quarters of them ... are nonviolent offenders, arrested for traffic violations, or property crimes, or simple drug possession. Many will be found innocent and have their charges dropped completely. Defendants who [are] detained before trial [wait] a median of 68 days in jail. Many ... are forced to wait simply because they can't afford to post bail. A 2013 analysis by the Drug Policy Alliance ... found that nearly 40 percent of New Jersey's jail population fell into this category. People sit behind bars not because they're dangerous, or because they're a flight risk, but simply because they can't come up with the cash. A recent analysis by the Vera Institute ... found that 41 percent of New York City's inmates were sitting in jail on a misdemeanor charge because they couldn't meet a bail of $2,500 or less. For low income people, the consequences of a pre-trial detention, even a brief one, can be disastrous. And in many cases, these people will eventually be found to be innocent. Some civil rights reformers [argue] that bail policies are tantamount to locking people up for being poor. We spend somewhere in the ballpark of $17 billion dollars annually to keep innocent people locked up as they await trial.