(Bugger me, bugger is getting through today)

Did the whole army open fire on unarmed protesters in an act of state sponsored genocide?
I am only remebering from news reports, and hesitate to make a comment before members who were there, but I recall it was a single plattoon at Bloody Sunday. Troops whose whole training was for fighting an armour/infantry war in Western Europe, and utterly unprepared for the situation.
They had no anti riot or crowd control kit, only their rifles.
One young soldier seems to have lost it and a couple more joined in.
Most maintained their discipline. How many shots were fired?
A shameful episode for sure, and the authorities actions afterwards fueled the understandable anger.