David Oyelowo stars in the first teaser for Lawmen: #BassReeves - streaming this Fall on Paramount . | MOVIECLIPS

Saddle up! A movie based on the true life story of Bass Reeves, a legendary tough African American cowboy in the Wild West. Bass Reeves was the first black deputy U.S. marshal west of the Mississippi River. He worked mostly in Arkansas and the Oklahoma Territory. During his long career, he was credited with arresting more than 3,000 felons. He shot and killed 14 outlaws in self-defense. | Ron Perlman