Censorship in South Korea is limited by laws that provide for freedom of speech and the press which the government generally respects in practice. Under the National Security Law, the government may limit the expression of ideas that praise or incite the activities of antistate individuals or groups.
South Korea has one of the freest media environments in Asia, ranking ahead of Japan, Hong Kong and Singapore in the Press Freedom Index.
However, since the inauguration of President Lee Myung-bak in 2008, South Korea has experienced a noticeable decline in freedom of expression for both journalists and the general public. South Korea's status in the 2011 Freedom of the Press report from Freedom House declined from "Free" to "Partly Free" reflecting an increase in official censorship and government attempts to influence news and information content.
There is an active independent media that expresses a wide variety of views, generally without restriction. Under the National Security Law, the government may limit the expression of ideas that praise or incite the activities of antistate individuals or groups. The law forbids citizens from reading books published in North Korea.
On March 21, the UN special rapporteur on the promotion and protection of the right to freedom of opinion and expression issued a report on his May 2010 visit to South Korea. While laudatory of progress made, the report also expressed concern about increased restrictions on freedom of expression and specifically cited as concerns laws broadly making defamation a crime (which the rapporteur labeled as “…inherently harsh and [having a] disproportionate chilling effect…”) and providing the potential for controlling the dissemination of election or candidate information and banning books.
South Korea's public libraries censor a plethora of subjects in their libraries - both online and in their physical collections. Examples of censored topics include: sexuality (including educational information about the subject), homosexuality, information about North Korea, violence, anti-government materials, and political discourse.
The public libraries of South Korea also censor information via discriminating against who can use the library's public meeting spaces. If a person or group wants to use the space to meet to discuss any of the forbidden topics listed above, they are refused.