Ira Samuel Einhorn, a.k.a. "The Unicorn Killer", (born May 15, 1940) was an American activist in the 1960s and 1970s who is now serving a life sentence for the murder of Holly Maddux in 1977. Einhorn was active in ecological and antiwar groups in the 1960s. At one time, he was a friend and contemporary of Jerry Rubin and Abbie Hoffman. He also claimed to have been instrumental in creating Earth Day in 1970, and participated in the Earth Day rally in Philadelphia that year, … Wikipedia
The odyssey of Ira Einhorn Philadelphia Inquirer, July 13, 2001 http://inq.philly.com/ [Story no longer online? www.apologeticsindex.org/news1/an010715-17.html
The definitive Wikipedia entry for Ira Einhorn. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Ira_Einhorn