The FAA gets thousands of reports of Drone activity every day. If some schmuck post a video on YouTube that alone can tie up the phone lines for Days.
The FAA isnt 911! They first have to decide if your claim is even worth investigating. If so they will react.
You must also realize that there is no LT. Columbo working at the FAA brilliantly trapping suspects, So if your expecting investigators to immediately fan out in your area to arrest your suspect. You are gonna be disappointed.
The FAA generally will want some sort of "filed" complaint instead of word of mouth.
You say you have a corrupt sheriff and because of this, nothing can be done. WELL- in that case, sorry but I must ask you and your voting friends why this corrupt individual has managed to stay in their position if this corruption exists and is so "Known"
Just because the FAA doesnt send a convoy of guys with suits and flight computers to your town to investigate your particular claim does not make your area a free for all for illegal Drone activity!
If you and your friends decide to "do something yourself" with this Drone, I can assure you that that is a good way to end up bankrupt and in Jail. Vigilante justice will get you nothing but trouble.
RECORD this Drone activity and send it to the local news outlet. You know they will run with a Drone story, and then you may get the Feds to come help you.
I can also assure you that inviting your buddies over to fly Drones illegally WILL get the FAA to knock on your door...... BUT you wont like the reason!