Since at least 1994 America has been in the grip of an incivil war. That year, led by Newt Gingrich, the Republicans regained control of the House of Representatives for the frst time in 40 years. Incivil war may sound like a figure of speech, something in the realm of the metaphorical - but it is not. The weapons may be words but the they are deployed in support of a radical reordering of American society.

This documentary originally aired on BBC Radio 4. If you want to understand how America got to Trump you must understand this history recounted with great detail by Michael Goldfarb. Please share this documentary widely, urgently.