How is Person of Interest propagandized? The first couple of seasons are about a secret government program designed to spy on everyone in the world, a black ops unit that assassinates American citizens, and a group of corrupt NYPD officers. The later seasons don't have much at all to do with the government.
Except the major theme was if it was a closed system vs. an open one. The machine in the show would probably be constitutional given that it goes to a significant length to protect people's privacy.