Historians can reach back to comparable periods of home-front risk adjustment, to the anarchist bombings that terrorized early 20th century capitalists and the scorched earth depredations of the Civil War.

The Italian Consulate in Buenos Aires was bombed on 23 May 1928 and seven were killed and nearly 50 wounded in the anarchist bombing.

April 30 - Several bombs are intercepted in the first wave of the 1919 United States anarchist bombings.

June 2 - Several mail bombs are sent to prominent figures as part of the 1919 United States anarchist bombings.

Because the Morgan building was so well known, many assumed that the target of the assumed anarchist bombing was actually the bank itself.

However, twenty-three years before the start of the series, Britain was given independence following "a prolonged campaign of civil disobedience and anarchist bombings."

Britain was later given independence from the French Empire following "a prolonged campaign of civil disobedience and anarchist bombings."

April 30, 1919: First wave of the 1919 United States anarchist bombings.

June 2, 1919: The home of Attorney General Palmer was bombed in the second wave of anarchist bombings.

In the Wall Street bombing of 1920, an incident thought to be related to the 1919 United States anarchist bombings, anarchists used a bomb carried by horse-drawn cart.