In a statement to ABC News, Clooney wrote, "Amal and I are so inspired by the courage and eloquence of these young men and women from Stoneman Douglas High School. Our family will be there on March 24 to stand side by side with this incredible generation of young people from all over the country."
The actor and producer added, "In the name of our children Ella and Alexander, we’re donating 500,000 dollars to help pay for this groundbreaking event. Our children’s lives depend on it.”

A few hours later, Oprah Winfrey said that the Clooneys' donation inspired her to make one of her own.

"George and Amal, I couldn’t agree with you more. I am joining forces with you and will match your $500,000 donation to ‘March For Our Lives,'" she wrote. "These inspiring young people remind me of the Freedom Riders of the 60s who also said we’ve had ENOUGH and our voices will be heard."

Then famed director Steven Spielberg also got into the mix, matching Clooney as well. So did studio executive Jeffrey Katzenberg.