2) Oklahoma City Bombing
The Alfred P. Murrah Federal building of Oklahoma City was attacked on 19th April 1995. The ghastly incident has been marked as one of the deadliest attacks in the American Soil. The terrorist Timothy Mcveigh was responsible for the attack. He was imprisoned and executed on 11th July 2001. In the blast of the bomb, 324 buildings were demolished, 168 people died and 680 got injured.