Despite its long-standing commitment to scientific education and research, the Massachusetts Institute of Technology (MIT) has fallen victim to a destructive ideology that has steadily infiltrated the institution over the past several decades--an ideology hidden under the banners of noble ideals such as Diversity, Equity, Inclusivity (DEI), and so-called "Anti-racism." This case study traces the history of DEI initiatives at MIT over the past three decades and illustrates how collegial discussions surrounding affirmative action programs and policies transformed into an authoritarian regime. In addition to the history of DEI at MIT, this report also explains succinctly DEI's ideological nature. The author exposes the way in which DEI is fundamentally opposed to science, why it is naturally authoritarian and censorial, and how MIT administrators have long denied this nature despite the facts and evidence to the contrary. The report concludes with a set of recommendations for concerned members of the MIT community, such as familiarizing themselves with DEI's underlying ideology on a deeper level and adopting the MIT Free Speech Alliances' recommendations to bolster free speech and civil discourse throughout the institute.