Law enforcement agencies in Los Angeles, California, are calling for restrictions to be placed on the sale of butane to curb the spread of a highly potent form of marijuana known as butane honey oil. Individuals are required to show identification before purchasing products like aerosol cans of paint and cough medicine that are able to be used for illegal purposes, and police want to see butane added to that list.
The criminal justice system is designed primarily to protect the innocent rather than punish the guilty, but mistakes do happen and people who have done nothing wrong are sometimes convicted and sent to prison. While prominent civil rights attorneys working with groups like the Innocence Project often feature in media stories about people who have been freed from prison after spending many years behind bars, experts in the area say that prosecutors actually deserve much of the credit. A district attorney in California set up the nation's first conviction integrity unit in 2002, and experts say that the work of such units around the country played a significant role in exonerating a record number of prisoners in 2015.