How can art reflect and inform the public about policy-making political agendas?

"In the extended republic of the United States, and among the great variety of interests, parties, and sects, which it embraces, a coalition of a majority of the whole society could seldom take place on any other principles than those of justice and the general good." ---- Federalist No. 51

“We cannot just transform images, we must shift our perspectives, change out way of thinking.” – Chila Kumari Burman

“Public Art is the art that the public can’t avoid.” – George Wyllie

“I want to make the big issues intelligible in the form of public art.” – Jenny Holzer