Terrorism is the main threat. It has existed long before the 20th century. The Crusades were a reaction to medieval terrorism in Jerusalem. The anarchist movement that began in the late 1800s, and which claimed President William McKinley as a victim (to assassination) in 1901, used terrorism. In 1920, a bomb exploded in a crowd in the Wall Street district of Manhattan, killing 40 and injuring 400. A warning note read, “Remember we will not tolerate any longer. Free the political prisoners or it will be sure death for all of you. American Anarchists Fighters.” The criminals were never caught. | Terrorism is the main threat. It has existed long before the 20th century. The Crusades were a reaction to medieval terrorism in Jerusalem. The anarchist movement that began in the late 1800s, and which claimed President William McKinley as a victim (to assassination) in 1901, used terrorism. In 1920, a bomb exploded in a crowd in the Wall Street district of Manhattan, killing 40 and injuring 400. A warning note read, “Remember we will not tolerate any longer. Free the political prisoners or it will be sure death for all of you. American Anarchists Fighters.” The criminals were never caught. |