The FBI just released its annual Crime in the United States report, detailing national crime data for 2015. According to the report, marijuana arrests are at a two decade low. This is definitely a good sign, but even one marijuana arrest is too many, and more than one marijuana arrest occurs every minute. Huffington Post reports: ...authorities in the U.S. made 643,000 arrests for marijuana-related charges in 2015 ― or about one every 49 seconds. Charges related to the drug accounted for 5.9 percent…