An animal rights activist, Camille Marino, has pleaded guilty to trespass and unlawful posting of a message with aggravating circumstances, The Detroit Free Press reported. Marino was arrested in May when she chained herself to the doors of the library at Wayne State University. She had been posting messages online in which she said that a Wayne State researcher who works with animals -- whom she named, listing his home and office addresses and phone numbers -- should be tortured. She also sent e-mail to the researcher saying, "I hope you die a slow painful death comparable to those you forced your victims to endure. Please don't interpret this as a threat. It's merely my most fond wishes for you." After a court ordered her not to post the researcher's address again, she did so almost immediately, authorities said.