What's the Scariest Lesson to Take From the Holocoust?

The people whom i ran the camps were not insane, although they were often deeply depressed and suicidal. They were all making rational decisions. The scariest and m meaningful lesson to take from the holocoust is that you yourself could be a part of a holocost even if you didn't support the killing. It's extremely easy to not get involved and stop something like that once it reaches a certain level. And furthermore, anybody who questions that narrative is to be immediately attacked. This is sential to mass formation psychosis. And this is what has happened. We had all those conditions. If you remember, back before 20 19, everybody was complaining, the world doesn't make sense