Ok. So. To understand the real story, what really happened, you need to watch it understanding that the same men that have a rapist as tax collector who shows only up when the man is off the house are in charge again... which might explain the 60ies and the Troubles.
Then add what is missing to get the movie through into public and be aware that this part of the world is ruled by the first commandment:
You shell not kill.
You may not murder, in modern English from here. Its been the longest time a translation mistake.