Also when you visit go by the property you are interested in purchasing as well about 2 to 3 block radius at different times, morning, afternoon, and night and do that more then one day it will get you a feel for the area.When you buy cheaper houses in the cheaper neighborhoods except to get cheaper rents but factor that into numbers during accusation and that can guide you in the amount you pay for the property and the repairs as well ( so that you do not overspend on either). 

We once had a bad experience with a crazy lady ringing my doorbell, I stupidly opened the door, she asked for someone by name hiding in my house, I said no, I'm here alone, I recently moved here, and she accused me of lying, pushed passed me, ran upstairs, walking from one end of the house to the other, opening closet doors, shouting "I know you're hiding here".  

Somebody wanting to sue for you backing out of a bad deal or accusing you of selling them a property with defects like unknown termite damage).

You can express your condolences, but don’t do them any special favors or you can be accused of showing favoritism.

Then there were always the late rent excuses, we dont think we should have to pay the late fee, I don't have money for kids food followed immediately by their facebook pics of beach vacation, accusing my wife of putting their rent money order (dated and time stamped of course) back in their apt to illegally charge late fee, claiming we weren't allowed to enter their unit even after proper notice or when they requested repairs and telling us they had us on cameraWe served 30 day notice for them to leave after they went month to month.  

Hopefully you and ALI can work out whatever you think was slanderous  that's a pretty serious accusation to put on the internet.   

I need to be able to work with this fellow so I can't go and accuse him of being out of line with the HUD regulations; I don't think that would benefit the project.  

She took to a social media app and began enlisting neighbors to climb on board her accusations of "party house" "every weekend". 

You don't want to deal with any nasty fair housing violation accusations.

Somebody wanting to sue for you backing out of a bad deal or accusing you of selling them a property with defects like unknown termite damage).