Original sentence: The American public was unaccustomed to such acts; though eight Chicago police officers had been killed during the Haymarket Riot in 1886, President William McKinley had been assassinated in 1901, the Los Angeles Times offices were burnt down in 1910 (killing twenty), and bombs were mailed to government leaders, the Wall Street attack was unusual in that it was detonated in a public place, evidently targetting financial workers and institutions
Edited sentence: It was the worst act of politically-motivated terror on American soil until the Oklahoma City bombing in 1995.The American public was unaccustomed to such acts; though eight Chicago police officers had been killed during the Haymarket Riot in 1886, President William McKinley had been assassinated in 1901, the Los Angeles Times offices were burnt down in 1910 (killing twenty), and bombs were mailed to government leaders, the Wall Street attack was unusual in that it was aimed at the public, and intended to kill large numbers of people