George Orwell remarked that the middle class have an uncanny knack of praying in aid the working class when the middle class are seeking to defend or extend their perquisites. Their goal achieved the middle class would then leave the working class back where they found them, albeit may be a little better off on occasion.
Plus ça change, plus c’est la même chose?
Incidentally, taking people on low incomes out of Income Tax does not take them out of tax. A mistake usually made by a certain type of ukip or Tory supporter. Middle class supporters, perhaps?