Suppose you are walking in a predominantly black neighborhood late at night visiting a friend (I'm assuming you aren't black) to watch a Spurs game.
Now suppose on your way home you notice a 200 poundish black guy in his late 20's staring at you and then following you on your way home.
Now suppose you turn onto the street your friend lives and you spot him again following you. You ask him why he's following you and he responds by askig you what are you doing in the neigborhood.
Is it possible you'd see this as him implying you don't belong in the neighborhood? Suppose you take a bit of an exception to his comment and tell him it's none of his business really after you realize he's just a civilian, not a cop or a security guard. Suppose he then says "Sir, you seem to be acting a bit su ious to me. Why don't you stay here until the police arrive. I called them and they are on their way to ask you a few questions".
What's your next action? Can anyone on here truthfully say (and obviously this is speculation, but I think this is a very reasonable possibility of how thngs transpired) that they would feel they should tell a complete stranger who hasn't identified himself to you as being a neighborhood watchman what they were doing and where they were going? Would there not be a voice inside you saying (uhh, I have no idea who this stranger is or what he wants, so it might not be a good idea to tell him where my friend lives)?
And if you found out someone had called the cops on you when all you were doing was going to a friend's house that you wouldn't be at the least vey upset?