You shouldn't get into arguments in public.
Peter is lining up at a driver's license office to renew his license and a man cuts the line.
Peter wants to react to the man cutting the line.
Peter stays calm and reports the situation to the office staff .
Peter confronts the man for cutting the line, and they start yelling at each other.
The office staff politely asks the man to go to the end of the line in order to be fair to the other people.
The office staff asks them to behave, or they will be expelled from the office.