Alvaro Luna Hernandez

In September 1975, Xinachtli was arrested for allegedly murdering Robert Anthony Beard, a former Sul Ross State University student.[4]

While imprisoned, Xinachtli studied Mexican-American history, the prison system, and revolutionary political theory, along with local laws usable in his and others' defense. Xinachtli fought against institutional corruption he saw through constitutional and civil rights lawsuits, hunger strikes, work stoppages and yard takeovers, and was one of the "seven other prisoners" whose civil suits were merged into what later became the landmark Ruiz v. Estelle victory for prison reform against the Texas Department of Corrections.[5] While incarcerated in Huntsville, Texas, he met Ricardo Adalpe Guerra, a Mexican national who had been convicted of killing a Houston area police officer, at the time on death row in the cell next to Xinachtli. He spent much of his sentence in solitary confinement (allegedly due to retaliation from the prison), before being cleared and freed in 1991, due in part to investigative reporting by former Houston Post staffer Paul Harasim.

Xinachtli settled in Houston with his wife.[6] Immediately following his release, he became the national coordinator of the Ricardo Adape Guerra defense committee and is credited as being a major influence in Adape Guerra's conviction being overturned. He founded a national civil rights group on behalf of Mexican-Americans, The National Movement of La Raza, and did extensive community work with "Stop the Violence Youth Committee, and the Prisoners Solidarity Committee". Xinachtli also helped to negotiate truces between Hispanic street gangs in Pasadena, Texas, following a spate of shootings. He also worked internationally, speaking in 1993 to the United Nations General Assembly regarding the United States' mistreatment of political prisoners.[6]

In 1996, while organizing against police brutality in Chicano communities an officer came to Xinachtli home on July 18, to arrest him on a robbery charge. During the encounter Xinachtli knocked the gun from the officers hand while it was pointed at him before fleeing. An act that Xinachtli claimed was in self defense as he says the officer had drawn his weapon in the middle of their conversation intending to shoot him while unarmed. Xinachtli later surrendered to police and though he was found to have been innocent of the robbery, was convicted for assaulting the police officer by knocking the gun from the officers hand and given a fifty-year sentence. Since then Xinachtli has been likened to a political prisoner by many human rights activists who have pushed the Inter-American Commission on Human Rights and Organization of American States into investigating his case.[7][8]