When did it become OK to film strangers in public?

via https://ift.tt/GWbO3RV Where is the line between public interest and breach of privacy?

Imagine yourself in Times Square, New York. You're on a trip with your sister. Flashing billboards, cart vendors, and street performers seek your attention. A member of a nearby dance troupe breaks formation to approach you, touching your shoulder and requesting a high five. Feeling uncomfortable, you refuse, rubbing your … When did it become OK to film strangers in public?