What author wrote a book about the death of fourteen peaceful protestors caused by 1 Para? 
Don Mullan:  His book "Eyewitness Bloody Sunday" is officially recognised as a primary catalyst for a new Bloody Sunday Inquiry which became the longest-running and most expensive in British Legal History. Bloody Sunday (1972):  Fourteen people died: thirteen were killed outright, while the death of another man four months later was attributed to his injuries.
i don't know