"History on Trial: My Day in Court with a Holocaust Denier" recounts the author's experience attending a court case involving a Holocaust denier. The trial centers on the legal and ethical implications of denying historical events, particularly the atrocities committed during World War II. The author reflects on the challenges faced when confronting Holocaust denial in a legal setting. The case highlights the tension between freedom of speech and the responsibility to uphold historical truth, emphasizing the importance of remembering and educating about the Holocaust to prevent the spread of misinformation.