Students across the U.S. stage walkouts after Texas shooting

• Some student activists wore orange to commemorate the gun violence prevention movement, NBC News reported.
• Students Demand Action, which is affiliated with pro-gun control group Everytown for Gun Safety, organized Thursday's countrywide protests.

What they're saying: “Enough is enough,” Students Demand Action said in an online statement. “Once again, gun violence has forced its way into our schools. …We need more than thoughts and prayers. We demand action from our lawmakers now.”

Flashback: The walkouts come after March For Our Lives organizers announced a mass protest in Washington, D.C., on June 11, four years after the Parkland shooting inspired the group to hold one of the largest demonstrations in U.S. history.

• "This is a call to action," Parkland survivor David Hogg said in a video statement uploaded to Twitter on Thursday afternoon.

• "To Democrats, to Republicans, to gun owners, to non-gun owners, to NRA members, to anyone in the United States. We have a responsibility to protect our future because these kids are dying. And I know we have our disagreements and they are very strong, but there has to be some kind of middle ground that we can find to work together to save just one life."