(A)   Municipal officers and employees shall be courteous in their official transactions with the public, and they shall conduct themselves in the performance of official duties so as not to knowingly deprive any person, at the time and under the circumstances then and there existing, of any lawful right or benefit to which such person may be entitled. Any person who feels aggrieved by the conduct of any officer or employee in violation of this division is invited to bring the matter to the attention of such officer's or employee's department head or to the Mayor, without prejudice to any other recourse to which such aggrieved person may be entitled.
   (B)   Members of the public, in turn, should be courteous in their transactions with officers and employees, and it shall be unlawful for any person knowingly to taunt, deride, jeer, or otherwise ridicule or debase, whether by act, word, or gesture, any officer or employee at any time or place while such officer or employee is lawfully engaged in the performance of any official duty.
('81 Code, § 133.04)  Penalty, see § 130.99