Yeah, I mean Facebook can open up a portal for all local and national police precincts and law enforcement that goes "This is the content that our systems and content moderators marked as illegal, this is the exact location, date, time it was recorded, our facial recognition software identified these and these individuals", etc.
However, I just also described how Facebook could easily be used in a dystopian police state fashion. I am fairly sure they aren't allowed to proactively report crimes. And that law enforcement would be overwhelmed by the sheer amount of reports coming in all at once.