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http://en.wikipedia.org/wiki/Severi...co_.26_Vanzetti.2C_and_Propaganda_of_the_Deed

U.S. President-elect Herbert Hoover visited Argentina in December 1928. Giovanni wanted to bomb Hoover's train in revenge for the execution of Sacco and Vanzetti, but the bomber, Alejandro Scarfó, was detained a short time before putting the explosives on the rails.

WI Scarfo had had time to plant the bomb and kill Hoover? And please, none of that US attacks Argentina nonsense, I'm not in the mood.
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