" While the entire US population has increased by about a third since 1980, the federal prison population has grown at an astonishing rate – by almost 800 per cent. It’s still growing – despite the fact that federal prisons are operating at nearly 40 per cent above capacity. Even though this country comprises just 5 per cent of the world’s population, we incarcerate almost a quarter of the world’s prisoners. "

― Philip G. Zimbardo , Man Disconnected: How technology has sabotaged what it means to be male