Where do you begin when those with the mentality of 'lizziecornish' (who also knows precious little about the history and politics of union within these islands) fail to equate the divide-and-rule tactics of imperialism with those of a would-be supremacist ascendancy within a single land? Political correctness means showing equal respect to all within a diverse society, regardless of gender (this includes not demeaning both men and women with stupid terms like 'boysies' and 'girlies), ethnic origin (not patronising those from other cultures like they were novelty musicians who you can pay less cos they're not used to the sort of fee indigenous bands get, whoopee) or a brand of belief, whether religious or just a view from crumbling high moral ground, as superior to any other and generally assuming that Britannia still rules the waves. And a person of colour is never 'English' though they may be a UK citizen.

To quote Billy Bragg:

Oh look out, my country's patriots are hunting down below
What do they know of England who only England know?