Watchdog journalism
Watchdog journalism informs the public about goings-on in institutions and society, especially in circumstances where a significant portion of the public would demand changes in response. This might involve:
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.