“…Meanwhile, scholars have argued that the policy requiring schools/ teachers to spot radicals, based on certain signs/indicators, would naturally make students entertain fears and hide their emotions and critical views. Hence, it constitutes a threat to their fundamental human rights, particularly their freedom of expression (Sukarieh and Tannock, 2015;O'Donnell, 2016;Mattsson et al, 2016;Thomas, 2016;Taylor and Soni, 2017;Ragazzi, 2017;Mattsson, 2019). The situation is made worse by the fact that some of the so-called signs/indicators (to spot radicals) are vague: "mundane behavioural changes in lifestyle and critical attitudes towards authorities and the values of mainstream society" (Ragazzi, 2017, 10, cf.…”