As the 2014 midterm elections approached, the media were quick to criticize conservative donors like the Koch brothers for backing issues important to them. But journalists largely ignored the incredible financial power being used to promote the liberal agenda. Five top donors – Michael Bloomberg, Warren Buffett, Pierre Omidyar, Tom Steyer and George Soros’s own son, Jonathan – are major funders of the left. Together, they have contributed at least $2.7 billion since 2000 to groups pushing abortion, gun control, climate change alarmism and liberal candidates. That’s not how major media depicted them. Broadcast networks applauded when billionaire hedge fund...