The Truth Shall Not Sink with Sewol

The Truth Shall Not Sink with Sewol (; lit. Diving bell) is a South Korean documentary film about the sinking of the MV "Sewol", directed by Lee Sang-ho and Ahn Hae-ryong.
Director Ahn said about this film "Families of the deceased are also important and I understand their sorrow, but we need to throw a question to reveal the truth.
Style.
The documentary revolves around the story of Lee Jong-in, who is the head of a private diving company who offered the use of his equipment to assist in the rescue and recovery of the victims. He reportedly showed up during the disaster, with the equipment called a "diving bell" which can provide divers a place underwater to eat and rest, breath, and can extend the time divers are underwater, and help place a diver in a specific location. While he was at first stonewalled by officials at the site, Lee Jong-in worked at his own expense before canceling his attempts. He was called back to continue work by government authorities, after victims families insisted that he return, but he reportedly found similar road blocks from government and military officials.
Awards and recognition.
It won Grand Prize at the Fukuoka Asian Film Festival in 2015.
Criticism.
The co-director of the film Lee Sang-ho, has been criticized for bias in reporting coverage of the ferry disaster and took up the work of the documentary project after his dismissal from the national broadcaster Munhwa Broadcasting Corporation, for allegedly becoming too personally involved in the initial stages of the disaster.
Prior to the film festival opening, earlier in the month family members of some of the victims hand-delivered a letter of protest to the Mayor of Busan Seo Byung-soo to protest the film. The families also held a press conference against the film stating it was a "one-sided claim" that "hurts bereaved families wishing to move on".
Reactions.
The documentary was reportedly almost not allowed to be screened in the city of Busan, after the Mayor reportedly claimed the film was too political for the film festival, as it was partially funded with taxpayer money.
Joshua Oppenheimer, a film director was struck by the "incredibly incompetent rescue mission" depicted in the documentary and after viewing the film began to question the role of media in South Korea and the rest of the world.