The provisions of this article have neither the purpose nor intent of imposing a limitation on the content of any communicative matter or materials, including sexually oriented matter or materials. Similarly, it is not the purpose or intent of this provision to restrict or deny access by adults to adult entertainment establishments or to sexually oriented matter or materials that are protected by the Constitution of the United States or of the Commonwealth of Massachusetts, nor to restrict or deny rights that distributors or exhibitors of such matter or materials may have to sell, rent, distribute or exhibit such matter or materials. Neither is it the purpose or intent of this article to legalize the sale, rental, distribution or exhibition of obscene or other illegal matter or materials.