Body cameras were supposed to bring greater transparency to law enforcement. The case of Ronald Greene suggests police departments are still learning how to use, and even abuse, a new tool.Today’s show was produced by Hady Mawajdeh, edited by Matt Collette, engineered by Efim Shapiro, fact-checked by Laura Bullard and hosted by Sean Rameswaram.Transcript at vox.com/todayexplainedSupport Today, Explained by making a financial contribution to Vox! bit.ly/givepodcastsLearn more about your ad choices. Visit podcastchoices.com/adchoices