Fun fact: Martin Luther King Jr.’s last piece of writing was published posthumously in Playboy. Hef has always been ahead of the times with the production of Playboy, and a new documentary chronicles his battles of activism and rebellion. Watch the trailer for Hugh Hefner: Playboy, Activist and Rebel to see how else Mr. Playboy became a part of many civil rights movements throughout the past 50 years.

Hugh Hefner: Playboy, Activist and Rebel is out in limited release in New York and L.A. Click here for more information.