It's worth noting that rent-a-cop-style 'security' attempted to keep photographers from taking pictures of people in a public space. These ever-courteous 'officers' made the universal hands-crossed-in-an-X sign along with the hand-in-the-front-of-the-camera hand in an attempt to keep photographers at bay. The hilarious result was a cat-and-mouse game of photographers - with long telephoto lenses used to getting the shot through the crowd - and security personnel unsure of what exactly the rules were. Outnumbered by photographers perhaps ten-to-one, they were assisted by volunteers who stayed with some artists.
The choice of giving the photographers a hard time or giving them carte blanche seemed to be left up to the artist. Thankfully, more than a few of the models were happy to smile for photo.