Reading up on the GPCR saw note of Mao quotes about dog farts. http://www.guardian.co.uk/arts/reviews/observer/story/0,14467,1193997,00.html ....If ever you doubted the brutality of this period, then Zhensheng's photographs are the ocular proof. Over and over, they record that peculiar relationship between infantilism and cruelty. Buddhist monks, subjugated, forced to display a banner that reads: 'To Hell with the Buddhist scriptures, they are full of dog farts.' Red Guards performing the 'It Is Right to Rebel' dance routine to an audience of uniform peaked caps.
Great coffee table book of photos on the Great Proletarian Cultural Revolution, Red-Color News Soldier by Li Zhensheng (Author) http://www.amazon.com/exec/obidos/tg/detail/- /0714843083/qid=1083766702/sr=8-1/ref=sr_8_xs_ap_i1_xgl14/103-5827339- 2569466?v=glance&s=books&n=507846