Buckel, a former Lambda Legal lawyer who championed marriage equality and the rights of LGBT youth, died Saturday after setting himself afire in a protest over fossil fuel use and the environmental destruction it causes.
A jogger who stumbled across the remains and shared photographs of them on Twitter before they were covered up by police said they were "freaked out" by the discovery.
Teena was later portrayed by Hilary Swank in the 1999 film Boys Don't Cry. "I apologize to you for the mess".
He had worked as a marriage project director at Lambda Legal, a non-profit organization that fights for full civil rights recognition for LGBT individuals and those living with HIV.
"My name is David Buckel and I just killed myself by fire as a protest suicide", the hand-written message read. He also served in an official capacity on the NYC Compost Project at the Brooklyn Botanic Garden, which is right next to Prospect Park.
In the note Buckel left, he also supposedly drew comparisons between his actions and those of the Tibetan monks who self-immolated in order to protest Chinese rule.
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In one week I played him two times in the final. "I lost five kgs in the last few months, that helps you move faster", she added. I won this for the whole Malaysian badminton team". " I neglect my age.
The New York Times reported the note said: 'Most humans on the planet now breathe air made unhealthy by fossil fuels, and many die early deaths as a result - my early death by fossil fuel reflects what we are doing to ourselves'.
Buckel said he wanted his death to lead to increased action, writing: "Honorable goal in life invites honorable objective in death".
He left a note in a shopping cart nearby and had sent the same note by email to several media outlets, including the Times.
He represented Brandon Teena's mother in a lawsuit against the New England sheriff which notified Teena's rapists that he had pressed charges and did nothing to protect him from being killed. David was an indefatigable attorney and advocate, and also a dedicated and loving friend to so many.
Tributes have begun to pour in for Buckel, with Lambda Legal calling his death a loss for the "entire movement for social justice". "He will be remembered for his kindness, devotion, and vision for justice". Honorable objective in life invites honorable purchase in death.
"His thoughtful and engaging advocacy broke through many stubborn misconceptions and showed it was possible and necessary for our movement to speak up for bullied, ostracised LGBT young people", she said in a statement to the Huffington Post.