It shall be cause for revocation or suspension of an amusement arcade license by the issuing authority, or for nonrenewal of such license, for an operator or an operator's officers, directors, agents or employees, or for twenty-five percent of the shareholders of an operator, to:
   (a)    Operate an amusement arcade for which such operator does not hold a valid license;
   (b)    Fail to display the license, as required by this chapter;
   (c)    Permit any violation of an ordinance of the City or statute of the State, for which a criminal penalty may be invoked, to take place at any amusement arcade oper ated by such operator; or
   (d)    Be convicted of a crime involving moral turpitude.