David Brock is a widely published author and Democratic activist. In 2004, Brock founded Media Matters for America, the nation’s premiere progressive media watchdog group. Following the 2010 elections, Brock founded the Super PAC American Bridge, which does opposition research to help elect Democrats to office.
Brock is the author of six political books, including “Killing the Messenger: the Right-Wing plot to Derail Hillary and Hijack your Government,” which debuted at number five on the New York Times Best-Seller list in September 2015. His other books include his 2002 best-selling political memoir, “Blinded by the Right”, “The Republican Noise Machine” and “The Fox Effect.” His writing has appeared in USA Today, the Huffington Post, the Daily Beast, and Salon.