ForGeorge Clooney, the teen gun control activists are already doing that.

Since then, student survivors have moved to the forefront of gun control activism.

Some were recently featured onthe cover ofTimeto discuss the growing movement.

Your moment, Clooney wrote.

Young people are taking it to the adults and that has been your most effective tool.

Read the full letter below.

Its terrific that youre editing the Guardian.

Its a stellar newspaper and they must feel honored to be working with you.

Young people are taking it to the adults and that has been your most effective tool.

You could talk to a dozen kids like the young kids from Chicago and LA that Emma met with.

You could take over the Guardian and make it tell the stories of children by children.

Its a once in a lifetime opportunity to point to this moment and say it belongs to you.

You certainly should do what you want but that would be my hope for you.

Amal and I stand behind you, in support of you, in gratitude to you.

You make me proud of my country again.

All the best,

George

March for Our Livesdemonstrations are scheduled for Saturday in cities across the world.