World War II to the present
The Germans returned in 1940, this time taking the forts in only three days. Most Jews were saved, with the help of the sympathetic population, as many Jewish children and refugees were hidden in the numerous monasteries. Liege was liberated by the British Second Army in September 1944.
After the war ended, the Royal Question came to the fore, since many saw King Leopold III as collaborating with the Germans during the war. In July 1950, André Renard, leader of the Liègian FGTB launched the General strike against Leopold III of Belgium and "seized control over the city of Liège". The strike ultimately led to Leopold's abdication.
Liège began to suffer from a relative decline of its industry, particularly the coal industry, and later the steel industry, producing high levels of unemployment and stoking social tension. During the 1960–1961 Winter General Strike, disgruntled workers went on a rampage and severely damaged the central railway station Guillemins. The unrest was so intense that "army troops had to wade through caltrops, trees, concrete blocks, car and crane wrecks to advance. Streets were dug up. Liège saw the worst fighting on 6 January 1961. In all, 75 people were injured during seven hours of street battles."
On 6 December 1985, the city's courthouse was heavily damaged and one person was killed in a bomb attack by a lawyer.
Liège is also known as a traditionally socialist city. In 1991, powerful Socialist André Cools, a former Deputy Prime Minister, was gunned down in front of his girlfriend's apartment. Many suspected that the assassination was related to a corruption scandal which swept the Socialist Party, and the Belgian Federal Government in general, after Cools' death. Two men were sentenced to twenty years in jail in 2004, for involvement in Cools' murder.
Liège has shown some signs of economic recovery in recent years with the opening up of borders within the European Union, surging steel prices, and improved administration. Several new shopping centres have been built, and numerous repairs carried out.
On 13 December 2011, there was a grenade and gun attack at Place Saint-Lambert. An attacker, later identified as Nordine Amrani, aged 33, armed with grenades and an assault rifle, attacked people waiting at a bus stop. There were six fatalities, including the attacker (who shot himself), and 123 people were injured.
On 29 May 2018, two female police officers and one civilian—a 22-year-old man—were shot dead by a gunman near a café on Boulevard d'Avroy in central Liège. The attacker then began firing at the officers in an attempt to escape, injuring a number of them "around their legs", before he was shot dead. Belgian broadcaster RTBF said the gunman was temporarily released from prison on 28 May where he had been serving time on drug offences. The incident is currently being treated as terrorism.