In an era when the bounds of free speech seem to be a constant topic of debate, We Go Way Back examined an episode from the 1970s that tested the limits of the US Constitution.

Kit speaks to Professor Philippa Strum, Global Fellow at the Woodrow Wilson International Center for Scholars, about the time neo-Nazis tried to hold a demonstration in a small US town of Holocaust survivors - and the liberal free speech advocates who came to the Nazis' defence.