June+1919,+September+1920+Bombings.

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In June of 1919 eight bombs exploded in eight cities within minutes of each other, and another 30 bombs sent through the mail were intercepted before they exploded the 8 cities that were bombed were,

Boston, Mass. Newton, Mass. New York, New York Patterson, New Jersey East Orange, New Jersey Philadelphia, PA Pittsburgh, PA Washington D.C.

In September of 1920 a larger bomb exploded in New York Killing 38 people and Injuring 300 others.

After the first bombing in 1919 the government created a General Intelligence Division headed by Herbert Hoover, who later headed the FBI.