Public security in the context of "Home affairs"

Law enforcement in the People's Republic of China consists of an extensive public security system and a variety of enforcement procedures. Along with the courts and procuratorates, the country's judicial and public security agencies include the Ministry of Public Security (MPS) and the Ministry of State Security (MSS), with their descending hierarchy of departments, bureaus (局, "Jú"), subbureaus (副局, "Fù jú"), and stations (所, "Suǒ").

Hong Kong and Macau have separate law enforcement agencies, different legal systems, and are classified as separate jurisdictions under the one country, two systems framework. However, the Hong Kong Police Force (HKPF) and Public Security Police Force often cooperate with the mainland MPS on cases involving cross border crime.

An emergency vehicle is a vehicle used by emergency services. Emergency vehicles typically have specialized emergency lighting and vehicle equipment that allow emergency services to reach calls for service in a timely manner, transport equipment and resources, or perform their tasks efficiently. Emergency vehicles are usually operated by authorized government agencies, but some may also be operated by private entities where permitted by law.

Emergency vehicles are usually given right of way in traffic, and may be exempted from certain basic road laws to reach their destinations in the fastest possible time, such as driving through a red traffic light or exceeding the speed limit; however, this is almost always done with emergency lights and sirens on, to alert traffic that the emergency vehicle is approaching. In some jurisdictions, the driver of an emergency vehicle can face legal action if the driver shows "reckless disregard for the safety of others".

Watchmen were organised groups of men, usually authorised by a state, government, city, or society, to deter criminal activity and provide law enforcement as well as traditionally perform the services of public safety, fire watch, crime prevention, crime detection, and recovery of stolen goods. Watchmen have existed since earliest recorded times in various guises throughout the world and were generally succeeded by the emergence of formally organised professional policing.

Emergency services and rescue services are organizations that ensure public safety, security, and health by addressing and resolving different emergencies. Some of these agencies exist solely for addressing certain types of emergencies, while others deal with ad hoc emergencies as part of their normal responsibilities. Many of these agencies engage in community awareness and prevention programs to help the public avoid, detect, and report emergencies effectively. Emergency services are often considered first responders, and typically have dedicated emergency vehicles.

Emergency services have one or more dedicated emergency telephone numbers reserved for critical emergency calls. In many countries, one number is used for all of the emergency services (e.g. 911 in many parts of the Americas, 999 in the United Kingdom, 112 in continental Europe, 000 in Australia). In some countries, each emergency service has its own emergency number (e.g. 110 for police, 118 for coast guard, 119 for fire and medical in Japan; 110 for police, 119 for fire, 120 for medical in China). Calls made to emergency services to report emergencies are called calls for service.

The National Guard of Ukraine (NGU; Ukrainian: Національна гвардія України, romanized: Natsionalna hvardiia Ukrainy, IPA: [nɐts⁽ʲ⁾ioˈnɑlʲnɐ ˈɦwɑrd⁽ʲ⁾ijɐ ʊkrɐˈjinɪ]; abbr. НГУ/NHU [ˌɛnɦeˈu]) is the Ukrainian national gendarmerie and internal military force. It is part of the Ministry of Internal Affairs, responsible for public security. Originally created as an agency under the direct control of the Verkhovna Rada on 4 November 1991, following Ukrainian independence, it was later disbanded and merged into the Internal Troops of Ukraine in 2000 by President Leonid Kuchma as part of a "cost-saving" scheme. Following the 2014 Revolution of Dignity, amidst the Russian intervention, the National Guard was re-established, and the Internal Troops were disbanded.

The purpose of the National Guard is to serve as a military unit with law enforcement powers. Its mission is to ensure state security, protect state borders (supporting the State Border Service), participate in activities to neutralize paramilitary armed groups, terrorist organizations, organized groups and criminal organizations, protect critical infrastructure such as Ukraine's nuclear power plants, diplomatic missions, and buildings of the Ministry of Internal Affairs. The NGU has sent personnel to UN peacekeeping missions. During peacetime the National Guard focuses on civilian public security, combating organized crime and controlling civil unrest. During wartime the National Guard can be mobilized as a regular military force and take part in combat operations alongside the Armed Forces of Ukraine, which it has done during the war in Donbas and the 2022 Russian invasion of Ukraine.

Reconstruction in Afghanistan refers to the efforts to improve Afghanistan's governance as well as physical buildings and infrastructure following the overthrow of the First Islamic Emirate of Afghanistan by the United States. These efforts involved various groups including supranational organizations, the Afghan government, the US government and other foreign governments, and civilians. These efforts also include training civil administrators, improving essential services and public safety, supporting civil society and self-determination, and promoting the rule of law and economic development.

Security forces are statutory organizations with internal security mandates. In the legal context of several countries, the term has variously denoted police and military units working in concert, or the role of irregular military and paramilitary forces (such as gendarmerie) tasked with public security duties.

The United States Department of Homeland Security (DHS) is the U.S. federal executive department responsible for public security, roughly comparable to the interior, home, or public security ministries in other countries. Its missions involve anti-terrorism, civil defense, immigration and customs, border control, cybersecurity, transportation security, maritime security and sea rescue, and the mitigation of weapons of mass destruction.

It began operations on March 1, 2003, after being formed as a result of the Homeland Security Act of 2002, enacted in response to the September 11 attacks. With more than 240,000 employees, DHS is the third-largest Cabinet department, after the departments of Defense and Veterans Affairs. Homeland security policy is coordinated at the White House by the Homeland Security Council. Other agencies with significant homeland security responsibilities include the departments of Health and Human Services, Justice, and Energy.

The United States Immigration and Customs Enforcement (ICE; pronounced "ice") is a federal law enforcement agency under the supervision of the United States Department of Homeland Security. Its stated mission is to conduct criminal investigations, enforce immigration laws, preserve national security, and protect public safety. ICE was created as part of the Homeland Security Act of 2002 following the September 11 attacks. It absorbed the prior functions of the Immigration and Naturalization Service and the United States Customs Service.

ICE has been involved in multiple controversies throughout its existence, with significant increases in criticism during the first and especially the second administration of Donald Trump. Following the passage of the One Big Beautiful Bill Act in 2025 as part of Trump's hardline immigration policy, ICE became the largest and most well-funded federal law enforcement agency in U.S. history. Its aggressive and anonymized enforcement actions, controversial publicity campaigns, and militarization resulted in significant drops in public support and raised concerns over legality, lack of accountability, and civil rights violations. ICE agents are noted for wearing masks, civilian clothing, and using unmarked vehicles to protect their identity. The agency has been the subject of widespread protests particularly in 2018 and 2025, with some activists calling for its abolition. Since its expansion, the agency has been described by critics, as well as the American Civil Liberties Union, as a growing paramilitary force under Trump's personal control.