 Other examples of a beneficial alien invasion are Gene Roddenberry's movie "The Questor Tapes" (1974) and his "" episode "" (1968); Arthur C. Clarke's "Childhood's End", the novel (later anime) series "Crest of the Stars", the film "Arrival" (2016), and David Brin's "Uplift" series of books.The cult film "They Live" (1988) uses its own alien infiltration back story as a satire on Ronald Reagan's America and the 1980s as an era of conspicuous consumption, in which the hidden skull-faced aliens and their human collaborators oppress poverty-stricken humans and a shrinking middle class.The aliens' true forms can be seen with special sunglasses and contact lenses.