At an October 2012 press conference, Bono Mack campaign officials released an audiotape on which Ruiz expressed solidarity with convicted police murderer Mumia Abu-Jamal and read a letter of support for Leonard Peltier, who had been convicted in 1977 of murdering two FBI agents in South Dakota. On the tape, supposedly recorded at a 1999 Thanksgiving rally, Ruiz read aloud a letter to Peltier from a Marxist leader, "Subcomandante Marcos." It read in part: "Leonard Peltier's most serious crime is that he seeks to rescue in the past, and in his culture, in his roots, the history of his people, the Lakota. And for the powerful, this is a crime, because knowing oneself with history impedes from being tossed around by this absurd machine that is in the system." A spokesman for Ruiz maintained that the candidate did not recall the incident and that he did not support Peltier.