Los Angeles Times bombing,
...that although an Iron Workers union member planted the dynamite in the 1910 Los Angeles Times bombing, the 21 people who died in the explosion and fire were all workers and not managers?
...that although an <a href="./International_Association_of_Bridge,_Structural,_Ornamental_and_Reinforcing_Iron_Workers" id="mwBdE" rel="mw:WikiLink" title="International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers">Iron Workers</a> <a href="./Trade_union" id="mwBdI" rel="mw:WikiLink" title="Trade union">union</a> member planted the dynamite in the 1910 <b id="mwBdM"><a href="./Los_Angeles_Times_bombing" id="mwBdQ" rel="mw:WikiLink" title="Los Angeles Times bombing">Los Angeles Times bombing</a>,</b> the 21 people who died in the explosion and fire were all workers and not managers?