Perils of Obedience (video)
I've uploaded another video. This one is about the dangers inherent in our disposition to obey authority figures: https://youtu.be/Fr-Iw79bvpU
TL;DW: Milgram's famous experiment shows that ordinary people are prepared to commit horrible crimes when so ordered by an authority figure. This explains things like the Holocaust, the My Lai Massacre, etc. Belief in authority is dangerous.