The new Netflix documentary “Disclosure” examines Hollywood’s portrayal of trans people over the years. Director Sam Feder uses decades of archival footage and personal anecdotes from trans people who were deeply affected by these depictions to tell the story of the industry’s evolving relationship with trans representation. Feder and executive producer Laverne Cox, who is also featured in the film, share why these on-screen portrayals are so powerful, especially for trans people coming of age.