A fact from Ubiratan Guimarães appeared on Wikipedia's Main Page in the Did you know column on 26 June 2010 (check views). The text of the entry was as follows:
Did you know... that PCC, one of Brazil's most notorious gangs, is said to have been formed in response to commanding colonel Ubiratan Guimarães' mishandling of the prison riot leading to the Carandiru massacre?
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