I have yet to see the film, but I have been somewhat intrigued by the negative criticism of the film.
I suspect some of it is simply because a) Ken Loach directed it and b)It is about the IRA during the Irish struggle for independence, so some put two and two together and come up with c) that it must therefore glamourise the IRA.
But does it! I have read a variety of reviews on this film and apparently the IRA are not seen as saints. That they are seen in the film as guilty of some abuses themselves. It also, which some commentators conveniently ignore, show the atrocities committed by the Black and Tans. This is a factor in the Irish War of Independence which is an undeniable fact, and one which brings shame on our UK history.
So I think, given the chance, I will see the film, but whilst I am no fan of Ken Loach's politics, and hold no truck whatsoever with the IRA (speaking in part as someone whose Dad worked in London during some of their worst bombing campaigns there), I think that some of the attacks on this film are somewhat unfair. Particually when some, like Simon Heffer, have admitted that they haven't seen the film.
And whilst it has flashed across my mind, I totally agree with this comment from The Poor Mouth