Police power and useful occupations

The 14th Amendment protects the citizen in his right to engage in any lawful business, but it does not prevent legislation intended to regulate useful occupations which, because of their nature or location, may prove injurious or offensive to the public. Neither does it prevent a municipality from prohibiting any business which is inherently vicious and harmful. But, between the useful business which may be regulated and the vicious business which can be prohibited lie many nonuseful occupations which may or may not be harmful to the public, according to local conditions, or the manner in which they are conducted.