But telling law enforcement to investigate people is within his legal powers. It would appear to be a legitimate use of power, even if its for a insidious purpose.

All he have to do is ask the investigators for a copy of the report and then "review" the report of the investigation, snap a pic with all the full name, addresses, birthdays, SSN, phone numbers, post to twitter, and wait for for any of the million of magots around the country to do something. He has so many supporters, there is guaranteed to be at least 1 crazy person. He doesn't need an organized brownshirts, he just need 1 crazy supporter.

Edit: Also remember Elon owns twitter, he can pull some strings to delay moderators from taking it down, doesn't matter if its against ToS, they'll find a way around it.