I'm just gonna copy a one star review I found on Rotten Tomatoes which encapsulates this film perfectly.
"Really traumatic to watch. Indictment of Irish culture." -Beth H M
A film has never impacted me in this way before. I left the theater in a trance. It was as if all the nasty ideas festering inside my head over the last few years had been poured out onto a canvas, and interrogated in stunning detail.
The struggle to maintain some semblance of humanity in an inhuman society, to fend off the ever looming (and oh so appealing) threat of nihilism, is something I've battled with for a long while…