"The most direct effect of the George Jackson murder was the rebellion at Attica prison in September 1971-a rebellion that came from long, deep grievances, but that was raised to boiling point by the news about George Jackson. Attica was surrounded by a 30-foot wall, 2 feet thick, with fourteen gun towers. Fifty-four percent of the inmates were black; 100 percent of the guards were white. Prisoners spent fourteen to sixteen hours a day in their cells, their mail was read, their reading material restricted, their visits from families conducted through a mesh screen, their medical care disgraceful, their parole system inequitable, racism everywhere. How perceptive the prison administration was about these conditions can be measured by the comment of the superintendent of Attica, Vincent Mancusi, when the uprising began: "Why are they destroying their home?" – Howard Zinn ("A People’s History of the United States", Ch. 19: "Surprises") #quotes