Demanding changes to US gun laws- High school students across the United States have walked out of their classes in large numbers to protest. This comes exactly one week after the Florida school shooting that killed 17 students and staff. CGTN's Owen Fairclough has more.

Just days losing their classmates and staff they're spearheading a new gun control movement. Students from Marjory Stoneman Douglas High School in Florida marching on their state capitol.

SOFIE WHITNEY FLORIDA SCHOOL SHOOTING SURVIVOR "Help us for our 17 fallen brothers and sisters. Help us so no one else dies."

DELANEY TARR FLORIDA SCHOOL SHOOTING SURVIVOR "We are not here to be told that we're great, that we're doing so much, because we know what we're doing. We're doing it so that our legislators, so that our lawmakers, will make a change."

Across the U.S their peers skipped school - marching from US Congress to the White House with similar demands for President Donald Trump. He came face to face with the bereaved from Florida school shootings and suggested arming teachers could be one solution.

ANDREW POLLACK FATHER OF STUDENT KILLED IN FLORIDA SHOOTING "My daughter has no voice. She was murdered last week, she was taken from us, shot nine times on the third floor. We as a country failed our children."

Trump suggested arming teachers could be one solution.

DONALD TRUMP US PRESIDENT "It's called concealed carry, where a teacher would have a concealed gun on them, they go for special training, and they would be there and you will no longer have a gun free zone."

Trump has opposed stricter gun control, but now backs a ban on bump stocks used to turn semi-automatic rifles automatic, so, they can fire multi-round bursts.  

The White House is also open to discussing age restrictions on buying the AR-15 used in the Florida massacre and a number of other mass shootings in the U.S. But that puts Trump on a collision course with a powerful lobby that opposes a ban on bump stocks and is credited with preventing previous attempts to restrict sales of assault-style rifles in the U.S. Owen Fairclough, CGTN, Washington.