El Corte Ingles, Spain's largest department store chain, has been targeted with a boycott for selling anti-gay books by Joseph Nicolosi, a controversial American psychologist.
LGBT groups have protested for over a year, but El Corte Ingles has continued to sell three books written by Nicolosi that promote the ideas of "curing" and "preventing" homosexuality.
Nicolosi's controversial books include: "I Want to Stop Being Gay," "How to Prevent Homosexuality" and "Gender Confusion in Childhood."
The political party Izquierda Unida (United Left) is calling on people in Spain not to shop at the department stores.
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"I wouldn't even call it a book. I would call it libel. It's something dirty and denigrating," Mariano Vilar, who works for Izquierda Unida, told The Guardian. "This type of publication does a lot of harm, more than you can imagine."
Nicolosi, who is the founder of the Thomas Aquinas Psychological Clinic in Encino, California, states on his website that his "specialty is the treatment of men who wish to diminish their same-sex attractions and develop their heterosexual potential."
During an interview with the BBC last year, Nicolosi claimed that homosexuality was caused by a child having a bad relationship with his or her father.
"Many of these clients are able to trace their traumatic origins to their fathers, 'My father never cared about me, my father never loved me,'" Nicolosi claimed, according to News.com.au.
Sources: The Guardian, JosephNicolosi.com, News.com.au