Also, why would they film it?

Anyway, isn’t it uncontested (but under reported) that ALL of the footage of bodies in graves that the Holocaust documentaries use is taken from elsewhere and those are NOT victims of gas chambers or murder or whatever else. Obviously the footage looks terrible and cruel - so many bodies! - so it gets the reaction of hating German people, but even the people who put together those documentaries admit they are cheating the footage since no actual Holocaust footage exists, but this footage looks like what people imagine from the Hollywood movies.