A look back at terrorism in America

Published On: Apr 15 2013 04:57:44 PM CDT   Updated On: Apr 15 2014 01:00:00 AM CDT

As America marks the one-year anniversary of the Boston Marathon bombings, look back at the history of terrorist attacks on home soil.

terrorist attacks - Los Angeles Times bombing
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A large bomb destroyed the Los Angeles Times building in downtown Los Angeles, killing 21 and injuring more than 100, on Oct. 1, 1910. The bomb was set by a union member belonging to the International Association of Bridge and Structural Iron Workers as a response to Harrison Gray Otis, publisher of the Los Angeles Times, who was vehemently anti-union. The bomb, 16 sticks of dynamite in a suitcase, was intended to go off at 4 a.m. when the building would be empty but the clock timing mechanism was faulty. It instead went off at 1:07 a.m. and ignited natural gas main lines under the building.

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