Following Park's assassination, as happened before, the Korean press regained some freedoms during the early stages of the new administration, until another military dictator, Chun Doo Hwan, reimposed military control, with what Youm and Salwen described as "an unprecedented 'purification campaign' against the press". Media were regulated through the Basic Press Act of 1980. That law was replaced in 1989 by the more liberal Act on Registration of Periodicals and the Broadcast Act by the Roh Tae-Woo administration, which is widely credited with transitioning South Korea to a democratic society respecting freedom of press, with Korean media becoming much freer from state control. A landmark case occurred in 1988 when a military court ruled against military officers accused of assaulting a newspaper editor who published a negative story about the Korean military.