It was a father and son team - a 50 year old Pakistani guy and his 24 year old son. The son had gone back to study in Pakistan where he was most likely indoctrinated. You can see them both casually shooting at the people. The father was killed while the son was seriously injured.
The hero was one Ahmed bin Ahmed, a Lebanese Christian fruit seller on Bondi Beach (not in the video) who rushed at the two psychos and managed to pull away one of their guns and point it back at them. Ahmad was seriously wounded and is recovering in hospital.
