Before he co-created the FX comedy series “Reservation Dogs,” Sterlin Harjo directed three micro-budget films in his home state of Oklahoma. He had knocked on Hollywood's door, but somehow he never could find financing. No one wanted Native films, and Harjo almost left the industry entirely. Then he teamed up with his friend Taika Waititi to make a coming-of-age show about four Native teenagers. FX liked “Reservation Dogs” so much, they’ve already ordered a second season.