2016 was a turbulent year for the United States. In July, videos of two black men shot dead by the police were shared on the internet and led to demonstrations that culminated in the murder of five police officers at a Black Lives Matter protest.

Then, Donald Trump was elected President, leaving the United States more divided than ever.

As the BAFTA-winning documentary series returns for its sixth and final run, Ross Kemp travels to Austin, Texas, to meet people on both sides of escalating racial tensions.

Black militia, white supremacists and the police add their voices to this documentary to debate on whether the US is on the brink of a race war.