Scott argues that the 1966 Riot Report had identified a means of retaining the existing structure of colonial power whilst increasing organisational links between government and people. In addition, improvements had to be made in labour, social welfare, other public services, such as health and housing, and to relations between the police and the public. Throughout the 1970s, new ways were developed to attach the local Chinese to colonial rule, and strengthen internal security. The fight against crime, which was so characteristic of the decade, formed part of an overall strategy to ‘clean up’ government, clean up the streets, and win the hearts and minds of the people. The Royal Hong Kong Police Riot Manual later formed the basis of the manual employed by the London Metropolitan Police, and by the Royal Canadian Mounted Police. Colonial practices thus returned to the metropolis.