From The New Yorker:
My novel “The Human Stain” was described in the entry as “allegedly inspired by the life of the writer Anatole Broyard.” (The precise language has since been altered by Wikipedia’s collaborative editing, but this falsity still stands.) This alleged allegation is in no way substantiated by fact. “The Human Stain” was inspired, rather, by an unhappy event in the life of my late friend Melvin Tumin, professor of sociology at Princeton for some thirty years. One day in the fall of 1985, while Mel, who was meticulous in all things large and small, was meticulously taking the roll in a sociology class, he noted that two of his students had as yet not attended a single class session or attempted to meet with him to explain their failure to appear, though it was by then the middle of the semester. Having finished taking the roll, Mel queried the class about these two students whom he had never met. “Does anyone know these people? Do they exist or are they spooks?”—unfortunately, the very words that Coleman Silk, the protagonist of “The Human Stain,” asks of his classics class at Athena College in Massachusetts. Almost immediately Mel was summoned by university authorities to justify his use of the word “spooks,” since the two missing students, as it happened, were both African-American, and “spooks” at one time in America was a pejorative designation for blacks, spoken venom milder than “nigger” but intentionally degrading nonetheless. A witch hunt ensued during the following months from which Professor Tumin—rather like Professor Silk in “The Human Stain”—emerged blameless but only after he had to provide a number of lengthy depositions declaring himself innocent of the charge of hate speech.
More here.