is inevitable". A summary of Harris' strategic intentions was clear, In comparison to the Allied bombing campaign against Germany, casualties due to the Blitz were relatively low; the bombing of Hamburg alone inflicted about 40,000 civilian casualties. Popular imagery and propaganda A popular image arose of British people in the Second World War: a collection of people locked in national solidarity. This image entered the historiography of the Second World War in the 1980s and 1990s, especially after the publication of Angus Calder's book The Myth of the Blitz (1991). It was evoked by both the right and left political factions in Britain in 1982, during the Falklands War when it was portrayed in a nostalgic narrative in which the Second World War represented patriotism actively and successfully acting as a defender of democracy. This imagery of people in the Blitz was embedded via being in film, radio, newspapers and magazines. At the time it was seen as a useful propaganda tool for domestic and foreign consumption. Historians' critical response to this construction focused on what were seen as over-emphasised claims of patriotic nationalism and national unity. In the Myth of the Blitz, Calder exposed some of the counter-evidences of anti-social and divisive behaviours. What he saw as the myth—serene national unity—became "historical truth". In particular, class division was most evident during the Blitz. Raids during the Blitz produced the greatest divisions and morale effects in the working-class areas, with lack of sleep, insufficient shelters and inefficiency of warning systems being major causes. The loss of sleep was a particular factor, with many not bothering to attend inconvenient shelters. The Communist Party made political capital out of these difficulties. In the wake of the Coventry Blitz, there was widespread agitation from the Communist Party over the need for bomb-proof shelters. Many Londoners, in particular, took to using the Underground railway system, without authority, for shelter and sleeping through the night. So worried were the government over the sudden campaign of leaflets and posters distributed by the Communist Party in Coventry and London, that the police were sent to seize their production facilities. The government up until November 1940, was opposed to the centralised organisation of shelter. Home Secretary Sir John Anderson was replaced by Morrison soon afterwards, in the wake of a Cabinet reshuffle as the dying Neville Chamberlain resigned. Morrison warned that he could not counter the Communist unrest