Advertising, marketing, propaganda. It programs people’s brains. It is extremely powerful.
There are dozens of these mass brain-programming campaigns going on right now. It’s been happening for many years … maybe centuries.
The effects can linger for many years. Even passing to the next generation.
[off topic?]
“The Source Of The Nile” by Avram Davidson. Science fiction short story.
Ad man is always looking for the next big thing. One day he notices some kids wearing their sneakers cut up. A few days later he realizes that the fad has exploded. He patiently tracks down where the fad started. It turns out there’s one family that starts all the fads. It’s never explained why or how, just that somehow these people are the ones who decide what’s going to be popular for the rest of the world.