I reread Propaganda by Edward Bernays, 1928.
It's coming up to 100 years old, and it's as true today as it was back then.
The golden nugget take: NOTHING has changed. They use the same tactics. Most things you see and hear, particularly on the TV, are specifically designed to engineer us socially, economically and psychologically. However innocent or entertaining it might be, most things have an underlying agenda.
Take what you see and hear with a pinch of salt.