I did have the police call regarding a voucher that looks like a check that was cashed by a check cashing company for 500.00. 

Given the social climate and your conflict with the broker and now that you are practically a criminal in the mind of local police and the park-the-car-in-the-Harvard-garage crowd, you just might be an entrepreneur sooner than later.Your worst foot forward letter campaign may just be your ticket to freedom!  

Maybe talk to the police department and see where they have a lot of problems?

(you got it 1/2 off last year and maybe there is some institutional memory about cars on the lawn or boarded up windows; something else involving yellow police tape or worse.

I called the FBI and police.

It contains a notice to the purchaser instructing that all due diligence with respect to adjacent parcels be performed and includes instructions for obtaining information on sexual offenders from the local police department.Have any of you run across similar statements in property disclosures before?

I had to deal with a lot more issues than I've ever had in non-S8 rentals like extensive property damage and also bed bugs, roaches, drain lines completely clogged up by grease (I learned what sewer worms are, look it up), spray paint art on walls and food on ceilings, noise complaints, police at the property, removing dead bodies, etc.  4.

Airtags are devices developed by apple to track things like keys or bags, I use this to airtag items most susceptible to theft like hot water tanks or furnaces and provide this data to the police to track the perpetrators.2.

I have had a few angry sellers contact the police about my Yellow Letter campaign.  

It's not really worth the liability to play police, like you mentioned.It's also going to be hard to create fine lines of promoting(aka the columbus cartel) and outright scamming(Pace Morby-esque stuff) in my opinion.