"メディアを支配する者は心を支配する"

Simplified Meaning:

The idea here is that the person or people who decide what information is shared with the public have a lot of power over what people think and believe. Imagine watching TV news every day; if the news only shows you certain stories and leaves out others, they are influencing your views on the world. For instance, if a news channel mostly covers crime, you might start believing the world is more dangerous than it is, even if crime rates haven't changed. In history, during wartime, governments often used propaganda—biased or misleading information—to shape people's opinions and maintain support for their actions. By controlling what is seen and heard, they could make people feel a certain way about the war. In your daily life, being aware of this concept helps you to think critically about the media you consume. It's important to get information from different sources and viewpoints so you can form your own opinions, rather than being overly influenced by one dominant source. This way, you're less likely to be manipulated and more likely to understand the world in a balanced way.