Harbour Bridge he was upstaged by Francis de Groot of the far-right New Guard, who slashed the ribbon with a sabre. In January 1938, Sydney celebrated the Empire Games and the sesquicentenary of European settlement in Australia. One journalist wrote, "Golden beaches. Sun tanned men and maidens...Red-roofed villas terraced above the blue waters of the harbour...Even Melbourne seems like some grey and stately city of Northern Europe compared with Sydney's sub-tropical splendours." Meanwhile, a congress of the "Aborigines of Australia", declared 26 January "A Day of Mourning" for "the whiteman's seizure of our country." With the outbreak of war in 1939, Sydney experienced a surge in industrial development to meet the needs of a wartime economy. Unemployment virtually disappeared and women moved into jobs previously male preserves. Sydney was attacked by Japanese submarines in May and June 1942 with 21 lives lost. Households throughout the city built air raid shelters and performed drills. A post-war immigration and baby boom saw a rapid increase in Sydney's population and the spread of low-density housing in suburbs throughout the Cumberland Plain. Immigrantsmostly from Britain and continental Europeand their children accounted for over three-quarters of Sydney's population growth between 1947 and 1971. The newly created Cumberland County Council oversighted low-density residential developments, the largest at Green Valley and Mount Druitt. Older residential centres such as Parramatta, Bankstown and Liverpool became suburbs of the metropolis. Manufacturing, protected by high tariffs, employed over a third of the workforce from 1945 to the 1960s. However, as the long post-war economic boom progressed, retail and other service industries became the main source of new jobs. An estimated one million onlookers, most of the city's population, watched as Queen Elizabeth II landed in 1954 at Farm Cove where Captain Phillip had raised the Union Jack 165 years earlier, commencing her Australian Royal Tour. It was the first time a reigning monarch stepped onto Australian soil. Increasing high rise development in Sydney and the expansion of suburbs beyond the "green belt" envisaged by the planners of the 1950s resulted in community protests. In the early 1970s, trade unions and resident action groups imposed green bans on development projects in historic areas such as The Rocks. Federal, State and local governments subsequently introduced a range of heritage and environmental legislation. The Sydney Opera House was also controversial for its cost and disputes between architect Jørn Utzon and government officials. However, soon