Students perform haka to pay tribute to classmates killed in Christchurch - video

Students from various schools paid tribute to two of their peers who died in the Christchurch shooting by performing a haka, a ceremonial Maori dance to mourn the victims and honour the dead. They were joined by scores of fellow students to form a deafening chorus. At least 50 people were killed in the attack, which was the worst mass killing in New Zealand's history.