"A high school biology class might have seemed like a place to teach Darwin's theory of evolution, but when John Scopes brought Darwin into his [USA] Tennessee classroom in 1925, he broke a state law against teaching evolution in schools and was taken to court. The Scopes 'Monkey Trial', as it came to be known, polarized Americans and drew the eyes of the world to the small town of Dayton, Tenn[essee]. In this 1965 episode of Front Page Challenge, John Scopes returns to challenge the panel and reflect on his role in one the biggest legal battles in history."

John Scopes, 'Monkey Trial' defendant Approx. 12 minute video

"• The state law that John Scopes flouted was the 1925 Butler Act, which forbade 'any theory that denies the story of the divine creation of man as taught in the Bible.' The law was repealed in 1967 after a teacher complained it infringed on his right of free speech."

A pivitol moment in US history in my opinion. The video is a bit dated but still fascinating...