If we compare defamation defenses to the principle provisions of freedom of expression and supervision by public opinion, we can find them are intuitionistic and exercisable.

比起对表达自由和舆论监督进行原则性规定而言，抗辩事由具有直观和可操作性强的特点。

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Freedom of Expression and Opinion.

UNESCO: EDUCATION

Article 47 of Qatar's constitution guarantees freedom of expression and opinion "in accordance with the conditions and circumstances set forth in the law", and the country has pledged to respect the right of free expression as a party to the Arab Charter on Human Rights.

BBC: Qatar urged to free poet Mohammed Ibn al-Dheeb al-Ajami

According to the description of the UN Special Rapporteur on the protection and promotion of the right to freedom of expression and opinion, journalists are individuals who observe and describe events, document and analyse events, statements, policies, and any propositions that can affect society, with the purpose of systemizing such information and gathering of facts and analyses to inform sector of society or society as a whole.

UNESCO: World Press Freedom Day 2013