"The newspaper announced that the mission of the Red Guards was to rid the country of the ‘Four Olds’: old culture, old customs, old habits, and old ways of thinking. There was no clear definition of ‘old’; it was left to the Red Guards to decide. First of all, they changed street names."
[Yao Nien-Yuan 姚念媛] (1915 - 2009) Chinese author who recounted her harrowing experiences during the Cultural Revolution in her memoir 'Life and Death in Shanghai'
Life and Death in Shanghai, 1987