I hope you'll consider changing your media diet, because your current selection is filling you with irrational racist fear. That's not how the real world is. Consider lolc's comment below:
"I once got lost in typical U.S. suburbia and the first door I knocked the guy wouldn't tell me the direction I needed to go but insisted on driving me there.
I was conscious of being percieved as a potential threat in that situation. But me being percieved as a likely nuisance to be ignored didn't cross my mind."
I think your comment might have had a useful alternative perspective if it could have been made without calling the parent racist and irrational. ISTM difficult to change someone's mind while disparaging their reason and character.
"I once got lost in typical U.S. suburbia and the first door I knocked the guy wouldn't tell me the direction I needed to go but insisted on driving me there.
I was conscious of being percieved as a potential threat in that situation. But me being percieved as a likely nuisance to be ignored didn't cross my mind."