Pupils return to Florida high school devastated by gun massacre

Classes have resumed at Marjory Stoneman Douglas High School for the first time since 17 students and teachers were killed by an expelled classmate with an AR-15 rifle, thrusting pupils into the centre of America's gun debate.

As well as about 50 uniformed police officers, grief counsellors are on campus in Parkland "to provide a lot of love, a lot of understanding" and help students ease back into their school routines, Broward Schools Superintendent Robert Runcie said.