The article examines the issues of detention of individuals who can be used in their professional activities by police officers following the Scandinavian model of public order and security during violations of the order of mass events. Sometimes, during violations of the relevant mass events, police officers must counteract such conduct which violates certain rights and freedoms of others, which behave peacefully, calmly, in accordance with the clear rules provided for by national and international law. In some places, in order to stop the above-mentioned acts, the police are forced to apply, on legal grounds, coercive measures, which are provided by the Law of Ukraine “On the National Police”. However, it must always be borne in mind that the right to peaceful assembly is a fundamental human right and the use of force must be kept to a minimum so as not to harm human life or health and to restore public order and safety. Dialogue and conversation between police officers are important in detaining people who violate public order and security, as well as for those who are nearby during various types of gatherings. Here we need to understand the message, the reasons or motives for the detention, and, in general, the attempt to communicate and talk to the detainee. Detention of persons, quite often, is an effective way to ensure the order of peaceful assemblies, to ensure the realization of citizens' rights to peaceful assemblies. Detention can be carried out by personnel - police officers in uniform, and officers who perform their duties in ordinary, casual clothes. Police officers often detain people for various types of offenses. The difference between ordinary detention and detention during demonstrations is in the presence of certain factors that need to be addressed.