After public hearings and consideration of testimony and documentary evidence, the Board of Supervisors finds that discrimination based on race, color, ancestry, national origin, place of birth, sex, age, religion, creed, disability, sexual orientation, gender identity, weight or height exists in the City and County of San Francisco. The Board finds further that such discrimination poses a substantial threat to the health, safety and general welfare of this community. Such discrimination foments strife and unrest, and it deprives the City and County of the fullest utilization of its capacities for development and advancement. The Board finds further that existing State and federal restraints on arbitrary discrimination are not adequate to meet the particular problems of this community, and that it is necessary and proper to enact local regulations adapted to the special circumstances which exist in this City and County.