The US school where 17 people were shot dead on Wednesday, reopens this week. Staff members will start returning to the Parkland, Florida, high school on Thursday. Classes could resume the following week. Funeral services have begun for the victims of the shooting. And anguish is turning to anger for some of the survivors. As Nitza Soledad Perez reports, many are turning that frustration into activism.

Seventeen memorial crosses in front of Marjory Stoneman Douglas High School attest to Parkland, Florida's loss.

TY THOMPSON PRINCIPAL, MARJORY STONEMAN DOUGLAS HIGH SCHOOL "I promise you I will hug each and every one of you, as many times as you need, and I will hold you as long as you need me to, for all 3,300 of you, and your families. And we will get through this together."

That was the school's principal, in an emotional YouTube address to students, as a stream of burials continues in this town of South Florida. Student frustration surrounding the issue of gun control here is turning into activism.

JISEL SAPPEL 12-YEAR-OLD MIDDLE SCHOOL STUDENT "I don't feel this is right. I don't feel that politicians getting paid by the NRA is great. I think we need justice and this shouldn't be happening in America. Politicians should not be paid by the NRA."

Many believe politicians are not acting to tighten gun regulations because they receive significant campaign contributions from America's powerful gun lobby, the National Rifle Association. So surviving student leaders have organized a social media movement under the hashtag "Never Again" - and are calling for students from across the nation to march on Washington next month to demand action.

CAMERON KASKY JUNIOR, MARJORY STONEMAN DOUGLAS HIGH SCHOOL "My message for the people in office is you're either with us or against us. We are losing our lives while the adults are playing around. And we have received endless support from your generation and we thank everybody for that immensely. We really appreciate it. We don't need you. On March 24 you are going to be seeing students in every single major city marching. We have our lives on the line here."

President Trump, meanwhile, has scheduled a "listening session" with students for Wednesday. Thursday, he'll meet with state and local officials on school safety. Florida Senator Marco Rubio says his state should consider enacting a law that would allow citizens to ask a court to remove guns from a person who poses a danger.

NITZA SOLEDAD PEREZ PARKLAND, FLORIDA "It remains to be seen if any of the gun laws of this nation will actually change. Congress has the last word and it would be up to them to listen to those thousands of students marching in Washington." NSP, CGTN, Parkland FL.