The Wind That Shakes The Barley

I thought the pub shoot-out scene was quite exciting. Damien and his men were able to get revenge for the murder of their dear friend Micheail Sullivan. Despite getting their revenge, this scene raised a number of questions for me. Were their actions justified since the British troops were sent after them? Did killing the men who murdered Micheail really resolve the issue? Was all the excess bloodshed necessary to prove a point? Was Damien's death justified?