No-go area  A "no-go area" or a "no-go zone" is an area in a town or region that is barricaded off to civil or military authorities by a force such as a paramilitary, or an area that is barred to certain individuals or groups. The term has also been used to refer to areas:   Some types of no-go zones, such as military exclusion zones, border zones, or other declared exclusion zones, may have a legal basis. "De facto" no-go zones may arise in conjunction with inadequate local governance or tactical advantage. The boundaries of "de facto" no-go zones are volatile and responsive to changes in security and tactical advantage. No-go zone boundaries can be negotiated between hostile parties or declared unilaterally by one side of a conflict. Other no-go zones are undeclared or unofficial, making accurate boundary identification difficult. No-go zones in which rescue or security services are unavailable enable unrestricted lethal violence. There has been controversy about the existence of no-go zones in various European countries, such as France and Sweden, as well as the United States. Some politicians and commentators have falsely claimed the existence of no-go zones in areas with large populations of Muslims and immigrants, where, they claim, national law has been displaced by sharia law or where there is lawlessness. Some have later recanted these statements, while others have faced press scrutiny for their allegations. With no government enforcement from the British colonial government aside from a few raids by the Hong Kong Police, the Kowloon Walled City became a haven for crime and drugs. It was only during a 1959 trial for a murder that occurred within the Walled City that the Hong Kong government was ruled to have jurisdiction there. By this time, however, the Walled City was virtually ruled by the organised crime syndicates known as Triads. Beginning in the 1950s, Triad groups such as the 14K and Sun Yee On gained a stranglehold on the Walled City's countless brothels, gambling parlors, and opium dens. The Walled City had become such a haven for criminals that police would venture into it only in large groups. During the Mozambican War of Independence, the Mozambique Liberation Front (FRELIMO) set up and defended no-go "liberated zones" in the north of the country. During the Troubles, the term was applied to urban areas in Northern Ireland where the Royal Ulster Constabulary (RUC) and British Army could not operate openly.