Earth day is the Largest organized demonstration in U.S. history.
Earth Day, observed annually on April 22nd, represents the largest organized demonstration in U.S. history. It began in 1970 as a nationwide environmental movement uniting millions of people to raise awareness about environmental issues and advocate for environmental protection.
The event marked a pivotal moment, galvanizing public support for environmental conservation and leading to the creation of the Environmental Protection Agency (EPA) and influential environmental laws such as the Clean Air Act and the Clean Water Act.