UNITED NEWS INTERNATIONAL (UNI) — A well-known civil rights lawyer who led lawsuits to legalize same-sex marriage set himself on fire, as a protest against the use of fossil fuel.

On Saturday, April 14 a passerby found lawyer David S. Buckel’s severely burned body in New York’s Prospect Park.

Buckel reportedly called in sick that morning, and about 25 minutes later emailed a note to media outlets. The same letter was also found near his body.

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 was best known as the lead attorney in Brandon v. County of Richardson, which held a Nebraska sheriff liable for not protecting a transgender man from rape and murder. The case inspired the 1999 film “Boys Don’t Cry.”