Original sentence: Its publication set off a chain of events that led to the assassination of Latter Day Saint movement founder, Joseph Smith, Jr..  The Expositor was founded by several disaffected associates of Smith, Jr.These actions generated considerable disturbance, and culminated in Smith's assassination by a vigilante group while he was in legal custody and awaiting a trial in nearby Carthage
Edited sentence: Its publication set off a chain of events that led to the martyrdom of Latter Day Saint movement founder, Joseph Smith, Jr..  The Expositor was founded by several disaffected associates of Smith, Jr.These actions generated considerable disturbance, and culminated in Smith's martyrdom by a vigilante group while he was in legal custody and awaiting a trial in nearby Carthage