The movie ‘White Light, Black Rain" about the U.S. atomic bombing of Japan’s Hiroshima and Nagasaki in 1945, will air tonight, Aug. 6 , the anniversary of the genocide, on HBO. HBO reported:

On August 6th and 9th, 1945, two atomic bombs vaporized 210,000 people in Hiroshima and Nagasaki. Those who survived are called "hibakusha"–people exposed to the bomb–and there are an estimated 200,000 living today. Today, with the threat of nuclear weapons of mass destruction frighteningly real- the world’s aRinku Senal capable of repeating the destruction at Hiroshima 400,000 times over, Oscar® award-winning filmmaker Steven Okazaki revisits the bombings and shares the stories of the only people to have survived a nuclear attack.

Here, director of the movie Steven Okazaki, talks about the challenges making the film he feared would be too gruesome and why his film won’t be shown in Japan.