Pretty hard to watch. Short summary for those who don't have the time to do the research: July 2011, Fullerton, CA. A homeless man, Kelly Thomas, is beaten by several police officers and dies several days later, never having regained consciousness from the beating. Its not clear to me why he came to the attention of police. No drugs or alcohol are found in his system. Over the next several months, three officers are arrested and criminally charged, public outrage leads to the recall of 3 of 5 Fullerton council members, the Fullerton police chief takes a medical leave of absence and eventually resigns.
Fast forward to the present, it appears that two of the officers involved are on trial for Thomas' death (trial began Dec 3, 2013). A third officer is awaiting a separate trial.