"Just calling for an immediate cease-fire to really ensure the safety for innocent people. We really want to stop killing kids and make sure everyone's safe," Youssef said.
[Ads /]
Youssef, who played Max McCandles in the Yorgos Lanthimos' film, is wearing a pin in solidarity for the Artists4Ceasefire cause.
"It's really just a humanitarian issue that a lot of artists are passionate about."
Billie Eilish and brother Finneas also were seen wearing the Artists4Ceasefire pin.
[Ads /]
Nearby the Oscars at the Cinerama Dome, demonstrators have lined the streets to protest and call for a cease-fire in Los Angeles.
MORE | Protest at Oscars over Israel's war in Gaza snarl traffic outside Academy Awards
Protesters over Gaza war take over Hollywood Boulevard near Oscar ceremony