UNESCO Freedom of Expression Toolkit

From the Summary:

The Freedom of Expression Toolkit builds on the premise that freedom of expression, as well as press freedom and freedom of information, are indispensable elements in the attainment of all human rights. Throughout this Toolkit there will be an emphasis on the four key elements of Article 19 of the Universal Declaration of Human Rights, namely the right to hold opinions without interference, the right to seek information, the right to receive information and the right to impart information to others.

 Source: United Nations Educational, Scientific, and Cultural Organization (UNESCO)

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