The street they were pulling this stunt on was a 45 mph street.
They were also using a crosswork that at the time I saw it was not be used at all--the only place that it served was closed.
You live in a very dangerous place. Apparently there is no concern for anyone who is not inside a car. It actually sounds more like an urban legend. Why would there be a crosswalk at a location where there is no traffic light or stop sign?
It was a mid-block crosswalk, apparently put there because people were crossing anyway--there were major hotel/casinos on both sides of the street. While the street is high speed at the time of day when people would be using it there would be enough traffic that it was basically stop and go.
However, at the time in question one of the casinos was bankrupt and shuttered--there was absolutely no place to go that was shorter using the crosswalk than walking either direction to a light. Hence nobody was using it except cops for a sting operation.