§ 21. Public or municipal purpose and general welfare defined.
Notwithstanding any other provision of law, the terms "public or
municipal purpose," and "general welfare," as used in this article,
shall each include the promotion of education, art, beauty, charity,
amusement, recreation, health, safety, comfort and convenience, and the
promotion, creation, development or expansion of business, commerce,
industry or job opportunities, and all of the purposes enumerated in
sections twenty, twenty-a, twenty-b, and twenty-e.