Young ladies are paraded thru in small groups. Their handlers know the johns they are looking for and there are motorhomes in the parking lot. It is quiet - if you didn’t know what you are looking for, you wouldn’t notice.
I’ve been to an information session at a local group - the lady presenting said these girls are runaways and some have been kidnapped. She tried approaching a girl in a grocery store to see if she could help and her handler noticed and yanked the girl away. She has been successful in helping some, but the handlers are dangerous and they aren’t all men.
The lady presenting said police are aware, but don’t want to start a shoot-out in the middle of this market. The paths through the Trade Days areas are very windy and narrow.
Those motor homes have license plates, and people have smartphone cameras.