The US state of hate

White people will be a minority in the US in 30 years - a concern for many of the 774 known hate groups in the country. The ideology of these Neo-Nazis, Klansmen, white nationalists, far right anti-government groups and others is not just hateful. It can be deadly. At 19:30 GMT Monday, we ask how these groups operate in the US, and why changing demographics and the Charleston church shooting are firing them up