The trailer for the controversial "Leaving Neverland' documentary which was premiered at Sundance has been unveiled.

The documentary has already been blasted for the family of Michael Jackson.

"We know that HBO is facing serious competitive pressures from Netflix, Amazon and other more modern content providers, but to stoop to this level to regain an audience is disgraceful," the Jackson estate said in a statement.

According to the HBO synopsis:

Leaving Neverland is a two-part documentary exploring the separate but parallel experiences of two young boys, James Safechuck, at age ten, and Wade Robson, at age seven, both of whom were befriended by Michael Jackson. Through gut-wrenching interviews with Safechuck, now 37, and Robson, now 41, as well as their mothers, wives and siblings, the film crafts a portrait of sustained abuse, exploring the complicated feelings that led both men to confront their experiences after both had a young son of his own. Directed by Dan Reed.

Unlike the "Surviving R. Kelly" series, the subject of the two-part documentary is not around to defend himself, so social media cannot technically 'cancel' Jackson if they take issue with the conduct detailed in the presentation. It will be interesting to see whether Dan Reed's offering manages to convert any die-hard Jackson fans.

Peep the trailer below.