From NBC News:
Ira Einhorn was on stage hosting the first Earth Day event at the Fairmount Park in Philadelphia on April 22, 1970. Seven years later, police raided his closet and found the “composted” body of his ex-girlfriend inside a trunk.
A self-proclaimed environmental activist, Einhorn made a name for himself among ecological groups during the 1960s and ’70s by taking on the role of a tie-dye-wearing ecological guru and Philadelphia’s head hippie. With his long beard and gap-toothed smile, Einhorn — who nicknamed himself “Unicorn” because his German-Jewish last name translates to “one horn” —advocated flower power, peace and free love to his fellow students at the University of Pennsylvania. He also claimed to have helped found Earth Day.
But the charismatic spokesman who helped bring awareness to environmental issues and preached against the Vietnam War — and any violence — had a secret dark side. When his girlfriend of five years, Helen “Holly” Maddux, moved to New York and broke up with him, Einhorn threatened that he would throw her left-behind personal belongings onto the street if she didn’t come back to pick them up.
Although Einhorn was only the master of ceremonies at the first Earth Day event, he maintains that Earth Day was his idea and that he’s responsible for launching it. Understandably, Earth Day’s organizers have distanced themselves from his name, citing Gaylord Nelson, an environmental activist and former Wisconsin governor and U.S. senator who died in 2005, as Earth Day’s official founder and organizer. [Remy Melina, Earth Day leader killed, composted girlfriend - LiveScience | NBC News]