righteous

(verb): To make righteous; specifically, to justify religiously, to absolve from sin.
(adjective): Free from sin or guilt.
(adjective): Moral and virtuous, to the point of sanctimonious.
(adjective): Justified morally.
(adjective): Awesome; great.

Human beings should take a righteous path, and so should art. We should promote kindness and beauty through art.
righteous indignation