I work as an admin in the oncology and children's hospital. It was very difficult for patients to go to doctors.
In general, I decided to conduct a social experiment. Every doctor in the office has a thin client and a monitor, decided to hang a webcam on that monitor.
People changed instantly. No screams, no noise, everything went as it was supposed.
According to the doctor - one uncle tried, but turned his eyes on the camera and ran to the door. He shouted something and left.
Conclusion: If people realize what their behavior and words may involve them, they think before they say anything!