But rather than turn the Oscars ceremony into a megaphone for messages about Ukraine, the show's directors opted for a silent message that did not mention Russia, which launched a full-scale invasion of Ukraine 31 days ago.
"We'd like to have a moment of silence to show our support for the people of Ukraine currently facing invasion, conflict and prejudice within their own borders," read the message posted on screen just before a commercial break.
The message said millions of families needed food, medical care, clean water and emergency services and asked viewers for humanitarian aid.
"We ask you to support Ukraine in any way you are able," read the silent message, adding the hashtag #StandWithUkraine.
Russian President Vladimir Putin calls the war a "special military operation" that Moscow says is aimed at demilitarising and "denazifying" its neighbor. Ukraine and its Western allies call this a pretext for unprovoked invasion.
Before the show, there were suggestions that Ukrainian President Volodymyr Zelenskiy might make an appearance through video link, as he has done in parliaments around the world.
Zelenskiy has been urging the West to give Ukraine tanks, planes and missiles to help fend off Russian forces and to impose a no-fly zone.
Just before the Oscar plea for aid, Ukrainian-born actress Mila Kunis made a veiled reference to the trouble in her native land.
"Recent global events have left many of us feeling gutted. Yet when you witness the strength and dignity of those facing such devastation, it's impossible to not be moved by their resilience. One cannot help but be in awe of those who find strength to keep fighting through unimaginable darkness," Kunis said, setting up a nominee for best song.
Kunis, 38, was born in the Ukrainian city of Chernivtsi and immigrated to the United States at age 7. She has been active in raising money for Ukraine.
On March 20, Zelenskiy praised Kunis and her husband, actor Ashton Kutcher, on Twitter, saying they were "among the first to respond to our grief" and had raised $US35 million for Ukrainian causes.
"Grateful for their support. Impressed by their determination. They inspire the world. #StandWithUkraine," Zelenskiy tweeted.
In other understated signs of support, actor Jason Momoa wore a handkerchief in blue and yellow, the colours of the Ukrainian flag, and Benedict Cumberbatch wore a pin on his jacket in the same colours..Â
