Sunshine books and pamphlets are the bane of the powers that be. They fill the lower classes with the desire to feel the sun and grass beneath their feet.
Akin to the modern IRL romance, they paint a rosy picture of what the world used to be. They describe idyllic parks and pastures filled with happy, healthy, FREE people. No wars, strife and constant struggle against the sea. These writings are almost universally banned and burned by the authorities, feeling that they only lead to discontent and unions. They paint the surface as a garden of Eden that is unattainable and thus an unnecessary distraction from toils of the working class. Authors are hunted down and publicly executed.