“We have a moral responsibility to stand up to Donald Trump, and that's what we're going to do.”

American political consultant, author, and commentator

David Brock is an American political consultant, author, and commentator. He is best known as the founder of Media Matters for America, the media watchdog group he established to track and challenge conservative coverage. Brock has worked as a liberal political operative and writer, and his public role has often centered on media criticism and partisan politics. Time described him as “one of the most influential operatives in the Democratic Party.”