Trailer released for "Joker" with Joaquin Phoenix

A trailer has been released for the film "Joker" starring Joaquin Phoenix in the title role as the iconic DC Comics villain. In "Joker", Oscar-nominee Phoenix plays Arthur Fleck, a failed stand-up comedian who turns into a psychotic murderer. The movie is set to premiere at this year's Venice Film Festival on August 31. It is slated for release in the United States on October 4.