Philando Castile, Fatally Shot in His Car, Was a Magnet for Minor Traffic Stops: Mr. Castile’s death from a police shooting during a traffic stop is seen by many as an illustration of the disproportionate risks black motorists face.

http://www.nytimes.com/2016/07/17/us/before-philando-castiles-fatal-encounter-a-costly-trail-of-minor-traffic-stops.html