In commenting on the acquisition of the Chaz Bono documentary Becoming Chaz by Oprah Winfrey's nascent cabler OWN, gay rights foe Peter LaBarbera called Bono's story 'sad.'

The film focuses on Bono's gender reassignment and will premiere at the Sundance Film Festival in Park City, Utah on Sunday, January 23. Bono, whose entire female to male transition is expected to take four to five years, will be on hand at the premiere.

The 41-year-old Bono, who was born Chastity Bono to gay idol Cher and the late entertainer-politician Sonny Bono, announced last June that he was eight months into gender reassignment.

Winfrey's OWN will broadcast the film in May.

“Oprah can't redeem the Chastity/Chaz Bono story – one of the saddest spectacles of our rebellious, gender-confused age,” LaBarbera, founder of the anti-gay group Americans for Truth About Homosexuality, messaged his 114 followers along with a link to On Top Magazine's story about the acquisition.

Filmmakers Fenton Bailey and Randy Barbato also produced The Eyes of Tammy Faye, Party Monster and Inside Deep Throat.