Don't even get started on advertising unless you want to go down a rabbit hole that will lead you to understand that a vast amount of things you think as "American Traditions" or "just the right thing" or "Patriotic" or even part of some religious beliefs were actually foisted upon the population by insanely clever manipulators who were paid by some entity to advance something in their specific interest..... Why do you buy diamonds? Just for a start.
or the real reason the dietary standards and food pyramid were created.