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Marius Mason

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Marius Mason (born on January 26, 1962) is an American anarchist, environmental and animal rights activist, and trans advocate[1] who in 2009 was sentenced to 22 years in prison after admitting 13 counts of arson and property damage amounting to US$4 million.[2][3][4] A member of the Earth Liberation Front, Mason was prosecuted for a 1999 attack on a building at Michigan State University, East Lansing, Michigan, that caused more than US$1 million in damage,[4] undertaken as a protest against research into genetically modified crops.[5] A further US$3 million in damage comprised attacks on houses under construction and on boats owned by a person responsible for a mink farm.[4]

Supporters allege that Mason's sentence represents a form of political repression in which an overlong sentence is given for politically motivated crimes.[6][7][8] With Mason's acts regarded by some as eco-terrorist in character,[9] supporters regard this as part of the Green Scare phenomenon and consider Mason a political prisoner.[10]

In 2014, Mason came out as a transgender man.[11] He began hormone replacement therapy in 2016 and by 2022 was slated to undergo sex reassignment surgery; however, this was prevented in January 2025 by Executive Order 14168, which denies the rights of social, legal, and medical transition to U.S. federal prisoners.[1]

On May 14, 2026, after 17 years' imprisonment, Mason was released from federal prison to a halfway house.[10]

Background

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Mason has worked as a gardener, musician, writer, Earth First! organizer, and a volunteer for a free herbal-healthcare collective. He is a father of two children. Mason, together with his then-husband Frank Ambrose, ignited an office that held records related to research on genetically modified, moth-resistant potatoes, funded by the United States Agency for International Development and biotech company Monsanto.[12][9] The next day, Mason and Ambrose set fire to commercial logging equipment in Mesick, Michigan. Both arsons were claimed by the Earth Liberation Front as actions against genetic engineering, deforestation, and other environmentally destructive acts.[13] On December 31, 1999, members of the Land Liberation Front claimed an arson attack on the Michigan State University farm building located in East Lansing, Michigan. US ELF claimed it set the fire specifically to stop the work of those studying genetically modified foods.[14]

In 2007, after evidence linking him to the attacks was found, Ambrose began co-operating with police.[15] Over the following year, he recorded 178 conversations with Mason and other activists.[15] Mason and three others were indicted in March 2008.[16] Ambrose divorced Mason on the day the latter was arrested.[15] In February 2009, Mason was sentenced to 22 years in prison for arson,[2] then the record sentence for an American eco-terrorist act.[17] In return for his co-operation with prosecutors, Ambrose was sentenced to less than six years for conspiracy to commit arson, despite court documents connecting him to attacks causing damage costing over $4 million.[15]

Trial

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According to Assistant U.S. Attorney Hagen Frank, the 20-year sentence sought by the prosecution would be "the most onerous sentence imposed in a case of this sort".[18]

At the trial, the prosecution argued that "A good cause does not justify the worst means. That's not how society works."[18]

During the three-hour hearing, Mason said, "I am genuinely sorry to those who were personally frightened by my actions ... I meant to inspire thought and compassion, not fear." After the sentence, defense lawyer John Minock stated that he would appeal, commenting, "I'm shocked. It's grossly out of proportion to other cases."[19][5]

Personal life

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Believed to be the first man to begin sex transition in federal prison,[20] Marius came out as transgender in 2014,[10] but was prevented from receiving medically necessary testosterone as part of transgender hormone therapy until 2016.[1]

In 2021, Mason was transferred to the male section at FCI Danbury, and in 2022, he was approved by the Bureau of Prisons for sex reassignment surgery. However, as a result of an anti-trans executive order issued on the first day of the second Trump administration, Mason's surgery was canceled and he was returned to the women's section at Danbury.[1]

Mason is vegan.[1]

See also

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References

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  1. 1 2 3 4 5 Tsolkas, Panagioti (Winter 2025). "Marius Mason Update". Retrieved September 14, 2026.
  2. 1 2 Ensha, Azadeh (February 6, 2009). "Eco-Arsonist Sentenced to Nearly 22 Years". The New York Times. ProQuest 2220464585. Archived from the original on August 8, 2012. Retrieved November 17, 2021.
  3. ↑ Officials: Earth Liberation Front members indicted in fire Archived 2018-03-02 at the Wayback Machine, CNN
  4. 1 2 3 White, Ed (February 5, 2009). "Woman gets 22 years for '99 Mich. campus arson". Associated Press. Archived from the original on February 9, 2009. Retrieved February 9, 2009.
  5. 1 2 McGraw, Bill (February 5, 2009). "Eco-activist to be sentenced today for MSU arson". Detroit Free Press. p. B1. ProQuest 436994199. Archived from the original on February 7, 2009. Retrieved November 11, 2021.
  6. ↑ "Free Marius Mason". Wayback Machine. Freemarie.org. Archived from the original on September 24, 2008. Retrieved November 11, 2021.
  7. ↑ "Environmentalist Sentenced to 21 Years as a "Terrorist"; Violent Racists Receive Half That". GreenIsTheNewRed.com. February 5, 2009. Archived from the original on February 28, 2009. Retrieved July 19, 2010.
  8. ↑ "ELF Press Office Calls Activist's 22 Year Sentence Cruel and Unusual Punishment". Infoshop News. February 5, 2009. Archived from the original on February 8, 2009. Retrieved July 19, 2010.
  9. 1 2 Goldenberg, Suzanne (March 24, 2009). "Activist or Terrorist?". The Guardian UK. Archived from the original on March 6, 2017. Retrieved March 16, 2013.
  10. 1 2 3 "May 14, 2026: Political Prisoner Marius Mason Released from Prison". Zinn Education Project. Retrieved May 25, 2026.
  11. ↑ "Advocates Fight Texas Statute Delaying Transgender Prisoners' Ability to Change Their Names". The Appeal. April 12, 2018. Retrieved December 16, 2021.
  12. ↑ "PBS - harvest of fear: Tapes & transcripts". PBS. Archived from the original on August 29, 2017. Retrieved September 4, 2017.
  13. ↑ "About Marius Mason". Wayback Machine. Freemarie.org. March 10, 2008. Archived from the original on December 29, 2008. Retrieved November 11, 2021.
  14. ↑ "GTD ID:199912310003". Global Terrorism Database. Archived from the original on September 14, 2021. Retrieved September 14, 2021.
  15. 1 2 3 4 Loadenthal, Michael (2014). "When Cops 'Go Native': Policing Revolution Through Sexual Infiltration and Panopticonism". Critical Studies on Terrorism. 7 (1): 30. doi:10.1080/17539153.2013.877670. S2CID 144215824.
  16. ↑ Christoff, Chris; Lam, Tina (March 11, 2008). "Environmental activists charged with Michigan arson incidents". McClatchy - Tribune News Service. ProQuest 456847901.
  17. ↑ "Convicted MSU arsonist seeks shorter sentence". Lansing State Journal. October 20, 2010. ISSN 0274-9742. ProQuest 759200263.
  18. 1 2 "Activist Gets Nearly 22 Years in Prison for Michigan State University Arson". Fox News. March 25, 2015. Retrieved December 16, 2021.
  19. ↑ Lansing, Mich. (February 5, 2009). "Activist Gets Nearly 22 Years in Prison for Michigan State University Arson". Fox News. Archived from the original on February 6, 2009. Retrieved November 11, 2021.
  20. ↑ "Meet Marius Mason, the first trans man to transition in federal prison". Jezebel. August 19, 2026. Retrieved September 14, 2026.
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