Dems = petulant children who pout when they don't get their way. Don't the British say, "Sod 'em", snugs, when one wants to denigrate such actions?
I think so, but my source for English vernacular may not be up on current slang. However, he's just moved back to Colchester so I'm hoping for a better future resource.
That one of the more polite comments indeed that it a very popular British saying.