The Ku Klux Klan is flourishing and exploiting racial tension in the US, according to a behind-the-scenes documentary. With race relations still on a knife edge in some parts of America after the deaths of African Americans at police hands, the white supremacist group is unashamedly promoting more hatred.
Images include a cross-burning ceremony in farmland outside St Louis, Missouri, the scene of days of rioting last year after Michael Brown, an unarmed black teenager, was shot by police. One clip shows Frank Ancona, a Klan leader, promoting the use of "lethal force" in Ferguson under the guise of self-defence.
Last month's shooting of nine worshippers at a black church in Charleston, South Carolina reignited fears that an undercurrent of white supremacist violence remains powerful in the US. In April three Klan members, including a prison officer, were charged with conspiring to murder a former black inmate.
Dan Vernon, who made the film, spent time with the KKK in several parts of the country, including Missouri where the wounds have barely healed after Brown's death. The Traditionalist American Knights, the fastest growing Klan group, is operating near Ferguson.
The alarming documentary shows men and women in Klan robes while children as young as 12 watch flames shooting into the air.
