Remembering David Koch and his family's political influence

David Koch speaking at the 2015 Defending the American Dream Summit at the Greater Columbus Convention Center in Columbus, Ohio. Photo credit: Gage Skidmore/CC BY-SA 2.0, via Flickr

David Koch, one of the wealthiest men on the planet and an influential libertarian political force, has died at age 79. Along with his brother Charles, the Koch brothers expanded their father’s empire into a global behemoth. Together, Charles and David are worth around $120 billion. Politically, they helped found the Tea Party movement, and pushed for so-called dark money to enter politics without restrictions. They have vast lobbying operations and Koch-funded think tanks at universities.