Robert discusses Martin's activities after the war, which included executing unarmed socialists. Then he became a pro-Nazi pastor and was shocked when the Nazis took power and did Nazi stuff.
Sources:
https://www.1517.org/articles/martin-niem%C3%B6ller-controversial-confessor
https://www.ebsco.com/research-starters/history/martin-niemoller
https://archive.org/details/godsmanthestory0000clar/page/28/mode/2up
https://www.nytimes.com/1984/03/08/obituaries/martin-niemoller-resolute-foe-of-hitler.html
https://archive.org/details/fromuboattoconce0000mart/page/260/mode/2up?q=jew
https://worldbeyondwar.org/kapp-putsch-modern-memory/
https://spartacus-educational.com/GERniemoller.htm
https://nwlocalpaper.com/first-they-came-explained
https://historymadeeasier.com/the-reverend-martin-niemollers-opposition/
https://blog.oup.com/2023/11/the-man-behind-the-legend-martin-niemoller-hitlers-personal-prisoner/
https://www.christiancentury.org/critical-essay/martin-niem-ller-nazis-finally-came-him
https://www.thenation.com/article/culture/first-they-came-martin-niemoller/
https://marcuse.faculty.history.ucsb.edu/projects/niem/NiemollersAntisemitism.htm
https://marcuse.faculty.history.ucsb.edu/projects/niem/njm415/NatJewMonthly415.htm
God's Man: The Story of Pastor Niemoeller: Mckay, David: 9780313210655: Amazon.com: Books
Hitler's Personal Prisoner - Benjamin Ziemann - Oxford University Press
Then They Came for Me by Matthew D Hockenos | Hachette Book Group

Part One: Martin Niemöller, the author of 'First They Came', was a murderous fascist
59:41

Part Two: Radovan Karadžić: The Genocidal Dictator Who Became a New-Age Guru
1:17:41

Part One: Radovan Karadžić: The Genocidal Dictator Who Became a New-Age Guru
1:13:28