TheWall Street bombing occurred at 12:01 pm on Thursday, September 16, 1920, in the Financial District of New York City. The blast killed 38 and seriously injured 143.

The attack was related to… anti-capitalist agitation in the United States.

Wall Street bombing – Wikipedia, the free encyclopedia

Had Bloomberg been mayor then, he would have had an immediate excuse to destroy the Bill of Rights.

h/t to Dave G