The Front was preoccupied with security. During the 1970s, it created a card-index and photo file of its opponents' names and addresses. To guard its marches from anti-fascists, it formed "defence groups" largely made up of young men—by 1974 called the "Honour Guard"—whose members often carried makeshift weapons like iron bars and bicycle chains. These marches often took place in areas that had experienced high levels of immigration; in doing so the NF sought to instil fear in immigrant communities, whip up racial tensions, and generate publicity by clashing with counter-protesters, all of which it could exploit politically. These tactics have continued into more recent times. In some instances, local authorities banned its marches; in 2012, Aberdeen City Council rejected the NF's request to hold a procession down Aberdeen's Union Street on Hitler's birthday. The NF also disrupted the meetings of anti-fascist groups and mainstream politicians. In November 1975, NF activists attacked a National Council of Civil Liberties meeting at the University of Manchester, with eight people requiring hospitalisation, and in another instance stormed a Liberal Party meeting discussing the transition to black-majority rule in Rhodesia, throwing chairs and chanting "White Power".