This movie addresses a lot of hidden issues regarding societal norms and dogmas, It is one of the most quintessential movies of 21'st century. For general audience this is just another FLOP REVENGE movie, but its actually an origin story of something far greater that you can't even comprehend the magnitude of its existence.
I'd like to use a verse from the bible in order to explain the movie in short.
Deuteronomy 32:35
It is mine to avenge; I will repay. In due time their foot will slip; their day of disaster is near and their doom rushes upon them.”
I hope there is a sequel of such abomination.