Former Washington Post Executive Editor Leonard Downie, a leading advocate of impartiality in reporting, says dedicated journalists working together can carry out vital watchdog reporting without carrying a brief for any particular side. Gerald Herbert/AP hide caption

itoggle caption Gerald Herbert/AP

Britain's The Guardian and The Independent profess their left-leaning politics, while The Daily Telegraph and The Daily Mail are known to lean to the right. Scott Barbour/Getty Images hide caption

itoggle caption Scott Barbour/Getty Images

Anchor Margaret Brennan hosts InBusiness With Margaret Brennan on Bloomberg TV. The network has scooped up journalists from rivals in its quest to break news and expand. Courtesy of Bloomberg TV hide caption

itoggle caption Courtesy of Bloomberg TV

Fox News Chairman and CEO Roger Ailes. Frederick M. Brown/Getty Images hide caption

itoggle caption Frederick M. Brown/Getty Images