Lady Gaga penned a song about Trayvon Martin to address killings of young black men

Lady Gaga wrote a song about Trayvon Martin for her upcoming album, "Joanne."

'Why do people just stand around?'

Lady Gaga's new song "Angel Down" is a tribute to Florida teen Trayvon Martin, who was shot dead by Neighborhood Watch patrolman George Zimmerman in 2012.

Martin was unarmed and his death sparked a series of protests across the United States and  ignited the Black Lives Matter movement. Gaga has honored Trayvon in her new song, in which she sings: "Angel down, angel down/Why do people just stand around?"

'They freeze up'

In a new interview with Beats 1's Zane Lowe on Thursday, the singer said, "I was overwhelmed by the fact that... the justice system continues to over and over again not seek justice for these families."

Gaga said she often meets young African-American fans who are worried about their safety: "They tell me they drive in their cars and if they hear a siren there is a paranoia that rushes through their body that they freeze up, that they can't think."

"This is a tremendous anxiety -- this is something that I care about," she said.

Lady Gaga premiered the song "Angel Down" on Wednesday night during a set at the New York Times/T Gala, where she was honored for her contribution to the world of fashion.

The song appears on her new album "Joanne," which hits shelves today.