* Stop supporting the enemies of freedom and start supporting your friends. Cancel your subscriptions to cable TV channels, magazines or newspapers that support big government over individual liberty.
Give your money to people, companies and publications that support your ideals rather than undermine them. The so-called "mainstream media" isn't really "mainstream" at all in terms of its ideas and beliefs.
It's only mainstream because it's the biggest media sector. But it's been shrinking for years. Help speed its path to irrelevance. Likewise for other businesses: If they support government policies that reduce freedom, do business with someone else.
This may not change their mind: If media companies cared solely about the bottom line, the New York Times would have changed its tune years ago, instead of becoming steadily more PC. But it will reduce their importance.