David Brock is an American journalist, author, political consultant, and activist. Born on November 2, 1962, in Washington, D.C., he began his career as a conservative journalist in the 1980s and 1990s, contributing to publications like The American Spectator and authoring books such as 'The Real Anita Hill' (1992) and 'The Seduction of Hillary Rodham' (1996), which were highly critical of prominent liberal figures. His investigative work during this period, initially funded by conservative philanthropist Richard Mellon Scaife, focused on scandals involving Bill and Hillary Clinton, earning him a reputation as a key player in right-wing media attacks and as a conservative hitman. However, Brock publicly renounced conservatism in the early 2000s, citing disillusionment with the movement's tactics, and shifted his allegiance to progressive causes, detailed in his 2002 memoir 'Blinded by the Right: The Conscience of an Ex-Conservative.' In 2004, he founded and serves as CEO of Media Matters for America (MMFA), a nonprofit progressive media watchdog organization dedicated to monitoring and correcting conservative misinformation in the press, which grew into an influential force in liberal media criticism. Brock expanded his influence by establishing American Bridge 21st Century in 2010, a research and communications firm specializing in opposition research for Democratic candidates, and serving as chairman of Priorities USA Action, a super PAC that supported Barack Obama's 2012 reelection and Hillary Clinton's 2016 campaign. He has been described by Time magazine as 'one of the most influential operatives in the Democratic Party' and has advised on media strategy for Democratic leaders, becoming a prominent liberal operative. His career has not been without controversy; he has faced criticism from both sides of the political spectrum. Conservatives accused him of fabricating stories during his right-wing phase, while progressives have scrutinized his funding sources and internal management at MMFA, including allegations of workplace issues. Despite these, Brock remains a pivotal figure in mapping and combating influence networks in American media and politics.