It is noted that in a modern democratic society, law enforcement agencies play a key role in ensuring legality, law and order, and the safety of citizens. They are an integral part of the mechanism of functioning of state power, acting as a tool for implementing the legal policy of the state and protecting the constitutional rights and freedoms of citizens. A special place in the system of law enforcement agencies is occupied by the police, which is on the front line of interaction between the state and citizens in the sphere of law enforcement. The police, as the central element of the law enforcement system, has a wide range of powers and responsibilities, covering crime prevention, crime investigation, public order and security. The article examines the role of law enforcement agencies, particularly the police, in ensuring legality, law and order, and the safety of citizens in a modern democratic society. Special attention is paid to the analysis of legal, organizational and technological aspects of police activity in the context of growing challenges such as cybercrime, international terrorism and organized crime. The functions of the police as a key element of the law enforcement system, its interaction with other state bodies and society are considered. The author emphasizes the importance of reforming the law enforcement system of Ukraine to meet international standards and growing social needs. It is noted that the functioning of the police in a democratic society should balance between ensuring security and protecting the rights and freedoms of citizens. Particular attention was paid to the need to improve the legal and organizational mechanisms of police work, which ensure their accountability to society and compliance with the principles of the rule of law. The article also raises questions regarding the legal definition of law enforcement agencies and their functional role in the modern state, the problems of normative and legal regulation of their activities. The importance of creating an effective system of police control and accountability in the context of democratic transformations taking place in Ukraine is discussed.