“We have met the enemy and he is us.” Walter Kelley (from his Pogo comic strip)
The first Earth Day celebrations took place in two thousand colleges and universities, roughly ten thousand primary and secondary schools, and hundreds of communities across the United States. More importantly, it “brought 20 million Americans out into the spring sunshine for peaceful demonstrations in favor of environmental reform.”[14] It now is observed in 192 countries, and coordinated by the nonprofit Earth Day Network, chaired by the first Earth Day 1970 organizer Denis Hayes, according to whom Earth Day is now “the largest secular holiday in the world, celebrated by more than a billion people every year.”[15] Walt Kelly created an anti-pollution poster featuring his comic strip character Pogo with the quotation “We have met the enemy and he is us” to promote the 1970 Earth Day. Environmental groups have sought to make Earth Day into a day of action to change human behavior and provoke policy changes.[16]
Nelson chose the date in order to maximize participation on college campuses for what he conceived as an “environmental teach-in”. He determined the week of April 19–25 was the best bet as it did not fall during exams or spring breaks.[42] Moreover, it did not conflict with religious holidays such as Easter or Passover, and was late enough in spring to have decent weather. More students were likely to be in class, and there would be less competition with other mid-week events—so he chose Wednesday, April 22. The day also fell after the anniversary of the birth of noted conservationist John Muir. The National Park Service, John Muir National Historic Site, has a celebration every year on or around Earth Day (April 21, 22 or 23), called Birthday-Earth Day, in recognition of Earth Day and John Muir’s contribution to the collective consciousness of environmentalism and conservation.[43]
Unbeknownst to Nelson,[44] April 22, 1970, was coincidentally the 100th anniversary of the birth of Vladimir Lenin, when translated to the Gregorian calendar (which the Soviets adopted in 1918). Time reported that some suspected the date was not a coincidence, but a clue that the event was “a Communist trick”, and quoted a member of the Daughters of the American Revolution as saying, “subversive elements plan to make American children live in an environment that is good for them.”[45] J. Edgar Hoover, director of the U.S. Federal Bureau of Investigation, may have found the Lenin connection intriguing; it was alleged the FBI conducted surveillance at the 1970 demonstrations.[46] The idea that the date was chosen to celebrate Lenin’s centenary still persists in some quarters,[47][48] an idea borne out by the similarity with the subbotnik instituted by Lenin in 1920 as days on which people would have to do community service, which typically consisted in removing rubbish from public property and collecting recyclable material. Subbotniks were also imposed on other countries within the compass of Soviet power, including Eastern Europe, and at the height of its power the Soviet Union established a nationwide subbotnik to be celebrated on Lenin’s birthday, April 22, which had been proclaimed a national holiday celebrating communism by Nikita Khrushchev in 1955.