1. If you are visibly Jewish, you are under a magnifying glass at all times. Even if others are breaking the rules, you will be more noticeable. It may not be "fair" that we need to act lifnim mishuras hadin, but that's life.
2. If you can't wear a mask, choose an airline that doesn't require one, even if it means paying more or spending more time in the air.
3. If you even think something is about to happen, start recording. Even if you think it's too late, record anyway.
Ideally, record surreptitiously so that it doesn't become confrontational. This story would have gone nowhere without video documentation of the "N-word" video, the cancellation announcements, and the Lufthansa supervisor.
4. Having the presence of mind to speak to a supervisor after the fact and to record it was brilliant. If you do decide to press for more information about a situation, be sure to record it. Even if you just point the camera at the floor, the audio will help, though obviously if you can hold in your hand and point it up, it will be better.
I'm sure there are many more lessons. Share them below.