这是作者作为“现行反革命”狱囚，于1975年3月-1978年10月在北京K字楼看守所和北京第一监狱所见所闻的真实记述。它生动细致的展现了监狱的日常生活和形形色色的囚犯遭遇，在身份、经历各异的这个特殊群体中间，在看似荒诞离奇、黑色幽默般的故事背后，折射出“文革”末期普遍的微妙的社会心理和高压、混乱背景下的人情世故，是一份既真实、又具深刻洞察的历史记录。

A school teacher discusses types of government with his class. His students find it too boring to repeatedly go over national socialism and believe that dictatorship cannot be established in modern Germany. He starts an experiment to show how easily the masses can become manipulated.