From 10 to 10:17 a.m. Wednesday, all Viacom networks and social platforms will go dark in solidarity with the National School Walkout against gun violence.

“Viacom and its brands have a long history of supporting young people’s movements around the world, and the company is extending that tradition by using its platform to drive awareness and show support to all students and their allies as they participate in this national movement,” the company said in a news release.

All of the channels listed in the image above will be affected.