At the beginning of the 20th century, anarchist attacks occurred in various parts of the world, reflecting the turbulence and ideological fervor of the time. Many of these attacks remain unsolved, either due to a lack of forensic capabilities at the time or because perpetrators operated clandestinely. Here are some notable unsolved or unresolved anarchist attacks from that era:

Wall Street Bombing (1920)

Location: New York City, USA.

Date: September 16, 1920.

A horse-drawn wagon filled with explosives and iron weights was detonated on Wall Street near the headquarters of J.P. Morgan & Co.

The blast killed 38 people and injured more than 400.

Despite extensive investigations, no one was ever arrested or charged.

Milwaukee Police Station Bombing (1917)

Location: Milwaukee, Wisconsin, USA.

Date: November 24, 1917.

A package bomb exploded in the central police station, killing nine police officers and one civilian.

The bomb had been left outside the Italian Evangelical Mission Church and was brought to the police station, where it detonated.

Preparedness Day Bombing (1916)

Location: San Francisco, California, USA.

Date: July 22, 1916.

A bomb exploded during a parade in support of U.S. military preparedness for World War I, killing 10 people and injuring 40.

Thomas Mooney and Warren Billings were controversially convicted but later pardoned due to lack of evidence.

Haymarket Affair (1886) – Precursor Event

Location: Chicago, Illinois, USA.

Date: May 4, 1886.

During a peaceful rally for workers’ rights, a bomb was thrown at police officers, killing seven officers and several civilians.

The bombing led to a nationwide crackdown on anarchists and labor activists.

While eight anarchists were convicted, the identity of the person who threw the bomb remains unknown.

The Galleanist Bombings (1919)

Location: Across the United States.

Date: 1919.

A series of bombings orchestrated by anarchists associated with Luigi Galleani targeted prominent political and business figures, including J.P. Morgan Jr. and U.S. Attorney General A. Mitchell Palmer.

Bombs were often disguised as packages or mailed directly.

The attacks contributed to the First Red Scare in the United States and led to extensive crackdowns on leftist and anarchist groups.

The five most driven routes in the United States are some of the busiest highways that connect major metropolitan areas, serve as key transportation corridors, and facilitate significant volumes of commercial and commuter traffic. These routes are integral to the U.S. transportation network.

I-95 (East Coast Corridor)

Runs from Miami, Florida, to Houlton, Maine, spanning approximately 1,920 miles.

Passes through major cities such as New York City, Washington, D.C., Philadelphia, and Boston.

Serves as the primary north-south route along the densely populated Eastern Seaboard.
I-95, Miami, FL
In Miami, I-95 has approximately 339,500 daily vehicles.
I-75, Atlanta, GA
In Atlanta, I-75 sees around 419,516 vehicles daily.

I-10 (Southern Transcontinental)

It stretches from Santa Monica, California, to Jacksonville, Florida, covering 2,460 miles.

Links major cities such as Los Angeles, Phoenix, Houston, and New Orleans.

A vital east-west corridor connecting the southern United States.

Supports significant freight traffic, particularly in Texas and Louisiana.
I-10, Houston, TX
Certain sections of I-10 in Houston report figures exceeding 313,000 daily vehicles.

I-5 (West Coast Corridor)

Runs from San Diego, California, to Blaine, Washington, near the Canadian border, spanning about 1,381 miles.

Passes through cities like Los Angeles, Sacramento, Portland, and Seattle.

Key north-south route for the West Coast, serving dense urban areas and supporting international trade with Canada and Mexico.
I-5, Los Angeles-Long Beach-Santa Ana, CA
This segment of Interstate 5 experiences approximately 504,000 vehicles.

I-405, Los Angeles-Long Beach-Santa Ana, CA
Interstate 405 has about 383,500 vehicles, contributing to the heavy congestion in the Los Angeles area.

I-80 (Northern Transcontinental)

Extends from San Francisco, California, to Teaneck, New Jersey, covering approximately 2,900 miles.

Crosses major cities like Sacramento, Salt Lake City, Chicago, and Cleveland.

A major east-west corridor connecting the Midwest and the West Coast.

I-35 (Central Corridor)

Stretches from Laredo, Texas, at the U.S.-Mexico border to Duluth, Minnesota, covering 1,568 miles.

Passes through cities like San Antonio, Austin, Dallas, Kansas City, and Minneapolis.

A critical north-south corridor for freight and commuter traffic in the central U.S.

Supports significant trade between Mexico and the United States under the USMCA (formerly NAFTA).

The Texas Triangle (San Antonio, Austin, and Dallas) is one of the busiest regions.