Actor Daniel Radcliffe is a passionate supporter of The Trevor Project, the national helpline for suicide prevention for LBGTQ (lesbian, bisexual, gay, transgender and questioning) youth. Radcliffe was in New York City this week to film a PSA (public service announcement) for the organization.

“I grew up knowing a lot of gay men and it was never something that I even thought twice about — that some men were gay and some weren’t,” the Harry Potter megastar said Friday. “And then I went to school and (for) the first time … I came across homophobia. … I had never encountered it before. It shocked me. I have always hated anybody who is not tolerant of gay men or lesbians or bisexuals,” the British actor added. “Now I am in the very fortunate position where I can actually help or do something about it.”

The Trevor Project has supporters such as Ellen DeGeneres and Neil Patrick Harris and Radcliffe’s commercial will air this spring.

Get more information about The Trevor Project at their website here.