Alexander Solzhenitsyn

"How we burned in the prison camps later thinking: What would things have been like if every police operative, when he went out at night to make an arrest, had been uncertain whether he would return alive? If during periods of mass arrests people had not simply sat there in their lairs, paling with terror at every bang of the downstairs door and at every step on the staircase, but had understood they had nothing to lose and had boldly set up in the downstairs hall an ambush of half a dozen people with axes, hammers, pokers, or whatever was at hand? The organs would very quickly have suffered a shortage of officers and, notwithstanding all of Stalin's thirst, the cursed machine would have ground to a halt."
— Alexander Solzhenitsyn, Nobel Prize winner and author of The Gulag Archipelago, who spent 11 years in Soviet concentration camps.