In one of his first sentences, Henderson wrote he "was ashamed to be Black." He was anti-Semitic in his writings and posted a flyer from the Goyim Defense League, which is a neo-Nazi white supremacy group that visited Nashville this summer.
Henderson said he was inspired by Candance Owens, a conservative Black pundit who previously called Nashville home.
"Candance Owens influenced me above all each time she spoke," Henderson wrote.
His writings showed that he had been thinking about violence for a few months. He wrote his final remarks on Nov. 18.
"I was so miserable. I wanted to kill myself. I just couldn't take anymore. I am a worthless subhuman, a living breathing disgrace. All my (in real life) friends outgrew me act like they didn't f—ing know me. Being me was so f—ing humiliating. That's why I spend all day dissociating."
Henderson's writings also showed a photo of The Covenant School shooter who died in 2023 after attacking the private Christian school. Three children and three staff people died that day in addition to the shooter.
He wrote he didn't intend to kill law enforcement and that he didn't consider himself the victim of bullying.
However, he did write about how he felt about the school in disparaging terms about race. Antioch High School has a diverse student body with a majority of Hispanic and Black students.