Screen Actors Guild (SAG) artists have called for a strike, and the stars of Christopher Nolan’s Oppenheimer are sticking with them.

The cast of Oppenheimer was supposed to be on stage at the London opening of their movie on Thursday, but a strike called by the Screen Actors Guild and the American Federation of Television and Radio Artists (SAG-AFTRA) made them change their minds.

But it should be said that the team was there for the photoshoot at the opening.

Cillian Murphy, Robert Downey Jr., Matt Damon, Emily Blunt, Josh Hartnett, and Rami Malek did not want to go to the opening with director Christopher Nolan at the Odeon Luxe theater in Leicester Square.

Deadline posted a video to their Twitter account in which Nolan praised the actors in his movie for joining the SAG-AFTRA strike to support the Writers Guild of America (WGA) strike.

“I have to acknowledge the work of our incredible cast, led by Cillian Murphy. The list is enormous. Robert Downey Jr., Matt Damon, Emily Blunt, Florence Pugh, Kenneth Branagh, Rami Malek, and so many more.”

Entertainment Weekly said that he also explained why they weren’t at the London launch.

“And we have to acknowledge, you’ve seen them here earlier on the red carpet, unfortunately, they’re off to write their picket signs for what we believe to be an imminent strike by SAG, joining my guild, one of my guilds, the writers’ guild, in the struggle for fair wages for working members of their union, and we support them.”

On Thursday, SAG artists called for a strike because the group hadn’t reached a deal with big production companies, streamers, and studios to sign major contracts.

On the other hand, Christopher Nolan’s movie Oppenheimer will come out on July 21.