No person licensed to operate a poolroom or billiard room shall harbor any criminal, gangster, swindler, professional gambler, or other person of ill repute, nor permit fights, brawls, or disturbances constituting a public nuisance in any poolroom or billiard room for which such license was issued; nor engage in, suffer or permit lotteries, number running, bookmaking, chance selling, gambling or gambling devices, in any poolroom or billiard room for which said license was issued; nor engage in, permit or suffer any violations of the ordinances of the Borough of Swedesboro or of the Laws of the State of New Jersey; or of the United States of America, in any poolroom or billiard room for which such license is issued.