This case study examines the life and crimes of a unique individual who perpetrated a double-homicide. He has been called a “vigilante” because he chose his primary victim from an online sex offender registry. In order to understand his pathway to violence we describe his early childhood, his extremist writings, and his criminal history before explaining why he is the archetypal “case in point” for future research on vigilante violence to consider.

中文翻译：

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典型的治安维持者案例研究：M 先生的双重杀人案

本案例研究探讨了一名实施双重凶杀案的独特个体的生活和犯罪行为。他被称为“义务警员”，因为他从在线性犯罪者登记处选择了他的主要受害者。为了了解他的暴力之路，我们描述了他的童年、他的极端主义著作和他的犯罪史，然后解释为什么他是未来研究私刑暴力的典型“案例”。