// What I do object to is being told by people in this country not to fly the country's flag on the utterly spurious grounds that it is 'racist'. //
Sadly, the Union Jack was co-opted by racists in the past. I don't see that it is racist in itself, because as far as I'm concerned racism is a thing that only people are capable of, rather than objects. Sometimes a particular object or symbol has an unambiguously racist history, but even then it's the history of how humans used it, and not the symbol, that matters.
I have no intention, anyway, of discouraging patriotism. What would worry me is if it became compulsory -- which, in any case, is to destroy the meaning. How people express their patriotism, and for that matter even whether people are patriotic, is and should remain a matter of choice.