His Highness the Emir Sheikh Tamim bin Hamad al-Thani attended the 21st anniversary celebration of Al Jazeera Media Network, held under the slogan “Al Jazeera Cannot Be Shut Down” at the network’s headquarters yesterday evening. The celebration was attended by the chairman and members of the board of Al Jazeera Network, a number of employees, in addition to a group of media professionals and intellectuals.