The Crisp Factory and Photograph Fiasco
and the follow up
Golden Wonder security firm silent after photography fiasco - Amateur Photographer
I love how the security guard said "you can't go around taking photos willy nilly when you bloody well want to." LOL!
As funny as the video is encounters like this are intimidating, especially if it's a person in authority and should know the law.
ACLU Photographer Rights USA
I have had a few minor encounters (not with police or security), but nothing like the incident that happened locally.
This link, everyday aperture, is specifically for street photography. It includes a paragraph about photographing people in public places and when a waiver/release is needed.LA to Pay $50K to Detained Photographers and Teach Deputies That Photography is Not a Crime