<P> Like a literal guard dog that barks when it notices an intruder, a "watchdog" role involves alerting others when a problem is detected . Common subjects are the government decision - making process, illegal activity, immorality, consumer protection issues, and environmental degradation . </P> <P> Watchdog journalism can be located in a variety of news media, such as radio, television, Internet, and print media where it may be seen as "a unique strength of newspapers", and additional new media and concepts such as weblogs and citizen journalism . Watchdog journalists also are called "watchmen", "agents of social control", or "moral guardians". </P> <P> The role of a watchdog journalist can be that of a protector or guardian . The role of a watchdog journalist as a guardian is to supply the citizens with information they must have "to prevent the abuse of power", and to "warn citizens about those that are doing them harm". In order to conduct their role as a watchdog, journalists need to have a certain distance from the powers and challenge them, as opposed to "propagandist" journalists, who are loyal to the ruling powers and elites . Because of the power distance and its overseeing function, watchdog journalism often officiates as the fourth estate, or is used in the context of that term . The array of topics for watchdog journalism is wide and includes "personal scandals, financial wrongdoing, political corruption, enrichment in public office, and other types of wrongdoing". In order to expose wrongdoings the watchdog aims at "finding hidden evidence". The aforementioned aspects are necessary for the role of the watchdog journalist to help "maintain order" and "warn against disorder". </P> <P> "Detached watchdog" journalism ("dedicated to objectivity, neutrality, fairness, and impartiality") is one of the four identified journalism cultures in a study conducted by communication researchers Thomas Hanitzsch, Epp Lauk, and others, between 2007 and 2011 . The study comparatively surveyed 2100 active journalists worldwide . It exists next to the idea of a journalist as a populist disseminator, critical change agent or opportunist facilitator . </P>

How does mass media act as a watchdog over government
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