Irvin Dana Beal (born January 9, 1947, in Ravenna, Ohio) is an American social and political activist, best known for his efforts to legalize marijuana and to promote the benefits of Ibogaine as an addiction treatment. He is a founder and long-term activist in the Youth International Party (Yippies), and founded the Yipster Times newspaper in 1972.[1][2][3][4] The Yipster Times was renamed Overthrow in 1978, and ended publication in 1989.[2]