Policing the Open Road - 99% Invisible
99percentinvisible.org
On July 10th, 2015, a police officer in Prairie View Texas pulled over a 28-year-old black woman named Sandra Bland for not signaling before a turn. The traffic stop quickly turned hostile and there was a confrontation between the officer about her smoking in her car. Many people have probably seen the footage of this

Another interesting article on Vollmer.