John Lithgow reads 20 lessons on Tyranny, penned by historian Timothy Snyder.

1. Do not obey in advance

2. Defend institutions

3. Beware the one-party state

4. Take responsibility for the face of the world

5. Remember professional ethics

6. Be wary of paramilitaries

7. Be reflective if you must be armed

8. Stand out

9. Be kind to our language

10. Believe in truth

11. Investigate

12. Make eye contact and small talk

13. Practice corporeal politics

14. Establish a private life

15. Contribute to good causes

16. Learn from peers in other countries

17. Listen for dangerous words

18. Be calm when the unthinkable arrives

19. Be a patriot

20. Be as courageous as you can