Theodore “Ted” Kaczynski, known as the Unabomber, is remembered for a long-running bombing campaign in the United States. Across multiple periods, Kaczynski sends improvised explosive devices through the mail, targeting individuals and organizations and generating widespread fear among the public about opening packages. The reports describe him as an “evil recluse” and focus on the scale and duration of his actions, framing the campaign as lasting for many years and leaving millions concerned about mail safety. They also revisit how the case became one of the most notorious in U.S. history, emphasizing that his attacks were recognized as a sustained effort rather than isolated incidents. While the coverage centers on the reconstructed details of the devices and the period of terror associated with his letters and parcels, the consistent theme is that Kaczynski’s bombings were carried out repeatedly over time and drew national attention. Overall, the sources characterize the Unabomber’s campaign as fear-inducing and persistent, contributing to a major investigation and later historical remembrance of the case.