Just like Gordon Brown’s ‘bigoted woman’ comment all those years ago revealed the depth of their contempt for the white working class.
Like @SpottedDonkey I thought about Gillian Duffy. I've also been thinking about the differences, e.g. that Gordon Brown hadn't realised he was being recorded and that afterwards, as I recall, he phoned her in person to apologise. I think (although I've not checked this) that Duffy was also invited to attend the next Labour Conference by way of further apology.
Now you can argue that Brown was only sorry he'd been caught out, and you might well be correct, but at least, in 2010, he and Labour had enough political sense to realise and acknowledge that he'd made a catastrophic blunder.
Compare and contrast with Lucy Powell, who was fully aware her words were being broadcast, and with her blustering 'I'm sorry if this was unclear' attempt at an apology.
Fifteen years and they've gone backwards.