This subchapter is not intended to interfere with legitimate business activities of peddlers, solicitors, and transient merchants as the same are herein defined, whether same be local or interstate. These provisions are intended only to, as nearly as possible, ferret out the illegitimate or confidence operators and to regulate and control all those who would use their unique presence on property within the city, for purposes of harassment, nuisance, theft, or other unlawful activities.