I knew a year in advance that I would move to America and saw all I could on Danish TV about this country. After a few years over here I realized I had not received an accurate impression. Most Americans also have a skewed impression on how it is to live in Europe.
Television is the most powerful way to present a message.
Almost the entire population watches TV every day. Often for several hours. The most effective way to display a product or political message is via expensive commercials only larger corporations can afford. We all try to ignore commercials, but they still affect our buying decisions. If it didn't work so well, companies and politicians would not pay millions for it.