Edition 1

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The 1910 Los Angeles Times Bombing

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At 1:07 a.m. on 1 October 1910, dynamite exploded beside the Los Angeles Times building. The blast and fast-moving fire killed twenty-one people working on the morning edition. James B. McNamara later pleaded guilty to murder, while his brother John J. McNamara admitted another bombing in a nationwide campaign tied to an ironworkers' union.

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1 October 1910

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Former Los Angeles Times Building at First Street and Broadway

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Los Angeles employers promoted an aggressively nonunion 'open shop,' and Times publisher Harrison Gray Otis used the paper against organized labor. Across the country, structural ironworkers were conducting a clandestine dynamite campaign against nonunion projects. That context explains the target without making the newspaper workers responsible for it.

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James McNamara placed a timed suitcase bomb in Ink Alley beside the Times building, near printing supplies and gas lines. Its explosion tore through the structure and ignited a fire. Workers were trapped by smoke, flames, an elevator shaft, and inadequate escape routes.

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The Times immediately blamed unions, while labor organizations initially argued that gas had caused the blast. Detective William Burns traced dynamite operations to the McNamaras and Ortie McManigal. Defense attorney Clarence Darrow negotiated guilty pleas after the evidence strengthened and was later tried, but acquitted, on one jury-bribery charge.

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The confessions devastated a national labor defense campaign and hardened Los Angeles's antiunion political culture. Federal prosecutions exposed more than one hundred bombings. The disaster also became an early example of how political violence, workplace conditions, media power, and a sensational criminal case can become inseparable.

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The twenty-one victims were workers killed at their jobs, even though the target was an antiunion institution. Remembering that distinction resists both anti-labor propaganda and any romantic account of a bombing that predictably placed ordinary people in mortal danger.

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The 1910 building is gone and the intersection has been repeatedly rebuilt. Library of Congress newspaper collections, Los Angeles planning studies, photographs, court papers, and the names of those killed preserve the evidence at a site with little visible fabric.

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The accepted institutional count is twenty-one deaths, though some older accounts use different totals. The explosion's dynamite origin and James McNamara's responsibility are established by evidence and his plea; debate concerns intent, the fire's propagation, and the conduct of investigators and attorneys, not whether the attack occurred.

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Chaos Tourist editorial

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Los Angeles Times Bombing (1910): Topics in Chronicling America
SurveyLA Citywide Historic Context Statement: Labor History, 1870–1980
Times Mirror Square Historic-Cultural Monument staff report

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