My extended family members died so I have a lot of freedom. If someone asked for personal information, I would ask for id and call the police.Also, I've been asking people here for years where public space ends and private space begins. Is it the sidewalk, the stairs, the yard, the front door? A relate issue would be where tort liability starts. A jerk from KH showed up at the door and pleaded with my mom to state whether she loved him? Neighboors were outside. What a good show! Through the family , five local KHs heard what a scandal he caused. They were not having any affair. She started a countdown to calling the police.
Black members were always welcome in our home. This was a grave threat to the neighbors. I used to field five or six phone calls asking what a person was doing at our home.