“…They are the essence of terrorism itself. From the legal definition of the concept of extremism, it is advisable to exclude those characteristics and signs that form a broad, political, historical, cultural and moral and ethical interpretation of it, and leave the part of the characteristics and signs of this extremely complex phenomenon, which will allow: 1) clearly build the legislation of the legal part of the mechanism of counteraction, including the system of responsibility for extremism; 2) clearly build a power-organizational, institutional part of the mechanism to counter extremism and terrorism; 3) ensure law enforcement practice, the need for a legal qualification of an activity, materials as extremist, including in terms of their separation from terrorism, hooliganism and vandalism, unlawful acts against the person, other unlawful acts against constitutional rights and freedoms, public order and security, state and municipal administration (Kodekova et al, 2018;Chahine, 2018;Martins et al, 2018).…”