"...but there's a cruelty in Englishness too."?

Andrew Marr, on his show this morning, said this to the actor Mark Rylance concerning his play about "indigenous" Englishness (here on BBC iPlayer, 24 minutes in):

Marr: How you celebrate because part of this is very sort of dark and dysfunctional too isn’t it? And I mean just thinking about that ghastly story from Doncaster this week, I mean there is a certain amount of wildness and madness and cruelty. There’s cruelty in the play but there’s cruelty in Englishness too. It’s not just an easy thing to celebrate

Understandably, there's been accusations of racism- what exactly, in Marr's opinion, makes "Englishness" more cruel than "Scottishness", "Welshness" and especially, considering the amount of carnage that took place in Ulster over the period of the last four decades, "Northern Irishness"?
Also what on earth has the horrific events which took place in South Yorkshire got to do with the two piece of scums' "Englishness"?

Marr definitely has a case to answer on this one.