Surely it could just be that they assumed it was SS on the roof and since they couldn't see just did nothing? A couple local officers who simply had to show up because their superior told them to likely wouldn't know anything outside of "stand here and keep watch". They have their job and the SS have theirs, and the local officers don't need to know much about the latter.
Hard to find the line between incompetence and malice, but this seems perfectly plausible to me based on what the guy in the above video said.
Local police are more likely to be in on it, because the police had every opportunity to inform the SS detail and apparently chose not to.
Surely it could just be that they assumed it was SS on the roof and since they couldn't see just did nothing? A couple local officers who simply had to show up because their superior told them to likely wouldn't know anything outside of "stand here and keep watch". They have their job and the SS have theirs, and the local officers don't need to know much about the latter.
Hard to find the line between incompetence and malice, but this seems perfectly plausible to me based on what the guy in the above video said.