The dark side of nationalism is national chauvinism, which says 'we are better, they are worse'.
Well...isn't that a contradiction with:
I told the family that 'in Poland we make the best bread in the world'
That implies just that, Poles makes the best bread, better as everybody else, who are worse.
And it isn't even true as for that you would have to test every other bread in the world...
See? Not so easy...
In some ears (your compatriots
) you will sound proud and patriotic, in other ears (not Poles
) it will always sound chauvinistic....and that goes for all countries and peoples.
Praising the achievements (if true or no
t) of your own country will always sound nationalistic and chauvinistic to foreign people...
So...many people tend to mix it up!
It's some kind of a law..