Mass media tends to follow a lot of common themes and often they are proxies for other general societal attitudes? Many of us grew up reading at least some book

Mass media tends to follow a lot of common themes and often they are proxies for other general societal attitudes? Many of us grew up reading at least some books in common? Interplanetary aliens always being more developed than us (and usually hostile) is a direct proxy for xenophobia to people from other countries. Ever wonder why there's so much hand-waving about immigrants stealin' our jerbs?