Cameron Kasky, a gun control activist and survivor of the mass shooting at Marjory Stoneman Douglas High School, has come out as queer.

He made the announcement in a tweet Sept. 13, writing that he is indebted to past LGBT activists, especially those of color, The Advocate reported.

"I don't know what 'type' of queer I am, and I am finally okay with that. Bi? Maybe? I don't know, man. The journey towards self-acceptance is one I have been on for years now, but the most difficult aspect has been searching for meaning in sexual identity when there truly is none. At least not for me. I've wanted to be straight for so long. A straight guy who's done some gay stuff here and there. There's so much security in heterosexuality."

Kasky, 21, acknowledged how LGBT activists of color have allowed him to live the life he has today, and the privileges he has as a white man, according to The Advocate.

"My ability to proudly share who I am today only exists due to queer activists, specifically queer activists of color, giving their lives for our right to exist," he tweeted.

Kasky also wrote about the stigma of being bisexual or demisexual, and how being told by white gay men “that bisexuality and demisexuality are illegitimate.”

"Bisexual men are told they're just gay but afraid to admit it and bisexual women are told they're just straight and having a little fun. We need this to change forever," Kasky wrote.

He ended his tweet with some advice: "To those of you who are also struggling to find an identity that you find authentic, take your time. Look inwards and indulge in your beauty and light. You'll find so much to love, so much to be proud of."

Kasky was one of the survivors of the massacre in Parkland, which killed 17 of his classmates. Along with other students that included out Parkland survivor X Gonzalez, Kasky helped organize the 2018 March for Our Lives gun control rally in Washington, D.C, The Advocate reported.