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Story highlights

The couple is making a donation in their children's names

They gave for social justice last year

(CNN) —  

George and Amal Clooney have stepped up in support of the survivors of the deadly shooting in Parkland, Florida.

The superstar couple announced Tuesday that they are donating $500,000 to the upcoming “March For Our Lives” in the names of their 8-month-old twins, Alexander and Ella.

A group of teens who survived the massacre that left 17 dead at Marjory Stoneman Douglas High School are organizing a march on Washington, DC on March 24 to advocate for reduced gun violence.

“Amal and I are so inspired by the courage and eloquence of these young men and women from Stoneman Douglas High School,” George Clooney said in a statement. “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, and in the name of our children Ella and Alexander, we’re donating $500,000 to help pay for this groundbreaking event.”

“Our children’s lives depend on it,” he added.

It’s not the first time the couple has added their voices – and funds – to an initiative.

Related: Clooneys make $1 million donation to fight hate groups

In August, they made a $1 million donation through their Clooney Foundation to the Southern Poverty Law Center (SPLC) to combat hate groups.