A separate category of criminal defamation is criminal insult. This provides punishment up to one year in prison or 2 million won in fines. Unlike criminal defamation, criminal insult involves no statement of fact, but simply generalized epithets. To establish criminal insult, the insult needs to be: (1) made publicly (i.e. the same “publicity” requirement as criminal defamation); (2) directed to a specific individual, and; (3) objectively damaging to the social reputation of the insulted individual.
Further, even an insult that would in fact damage the reputation does not rise to a criminal level if, in the context of overall situation in which the insult was made, the statement is not outside of the bounds of social norms. For example, the Supreme Court in 2008 held that a golf caddy who complained about her boss on the Internet by calling him “pitiable” and “pathetic,” was not guilty of criminal insult. Among other reasons, the ruling was given because the level of her insult was quite light and it was made in the context of complaining about workplace conditions—both of which were within the social norms.
All in all, the full contour of Korea’s criminal defamation laws shows that it to be less outrageous than one may think. The law is hardly a license to punish every nick and cut caused by everyday speech. Although horror stories on the Internet regale in claiming that “truth is not a defense” in Korean criminal defamation, the truth had better be actually defamatory before any punishment is meted out.
One can easily think of many circumstances in which even a true fact about a person can lower social esteem, in a way that does not impinge on the public interest. If, for example, Person A has an embarrassing venereal disease, what would justify the actions of Person B who, intending to harm Person A’s reputation, widely publicizes that true fact?
Because the standards for criminal defamation are fairly strict, Korea’s prosecutors frequently decline to indict after receiving the criminal complaint. Even if the prosecutors do indict and the case moves forward, more than 90% of cases are dismissed or result in the prosecution’s defeat. (The author’s opinion is that the Korean government’s case against the Sankei’s Mr. Kato will fail as well because of the “public purpose” defense.) [Wall Street Journal]
I highly recommend reading the rest at the link, for those interested in this topic.