Freedom of expression is an important democratic element that has been pursued through historical evolution as the natural rights of people which is ensured by the constitutional law. This democratic evolution works for national development as a prerequisite condition. Various policies of government are necessary in other for national development, but the atmosphere in which other opinions are accepted should be made for it. However if freedom of expression were accepted without limitation, either human rights or honor of other people would have been infringed at least.
Especially violation of human rights to the disadvantaged like females, the elderly, the handicapped, the downscale, sex minorities might happen ordinarily in disguise as freedom of expression. Freedom of expression to the disadvantage could bring the result of violation of human rights by being used to make words with the expression like aversion, shame, contempt, discrimination. Therefore even if freedom of expression should be ensured as much as possible, some limitation must exist for preventing violation of human rights and honor of others. However the way of limitation was mostly criminal punishment. It is not sufficient that excess of freedom of expression is limited by only criminal punishment. Therefore it is limited by not only criminal punishment but also civil and administrative punishment, furthermore diverse political discussion is needed for including constructive regulation that is positive one for forming social atmosphere. Accordingly effort of central and local governments is required for constructive regulation, but effort of people themselves on autonomy is required as well.