Spiegelman's graphic novel, which was recently banned by a school district in Tennessee, tells the story of how his Jewish parents survived the Holocaust in Poland.
Gitlin was part of the tumultuous student protest movement of the 1960s, and continued his commitment to social change through teaching and writing. He died on Feb. 5. Originally broadcast in 1987.
New York Times reporter Luke Broadwater says Trump and his allies were fixated on reversing the election: "It seemed like crazy stuff at the time ... but obviously it got extremely serious on Jan. 6."