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From the Universal Declaration of Human Rights proclaimed by the United Nations General Assembly in Paris on 10 December 1948:

Article 19: Everyone has the right to freedom of opinion and expression; this right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers.

These and other human rights find their limitation in

Article 29: […] 2. In the exercise of his rights and freedoms, everyone shall be subject only to such limitations as are determined by law solely for the purpose of securing due recognition and respect for the rights and freedoms of others and of meeting the just requirements of morality, public order and the general welfare in a democratic society. 3. These rights and freedoms may in no case be exercised contrary to the purposes and principles of the United Nations.

For an example, how these higher order rights from article 19 can be exchanged for small coin, see the code of conduct of stackexchange.

The UNO proclamation denies "any right to engage in any activity or to perform any act aimed at the destruction of any of the rights and freedoms set forth herein."

This statement does not prohibit to discuss and even change specific values. But most of the actions named in the OP's question are banned. Only the general term "other liberal values" from the question needs detailed definition.