Red is the Rose Irish nationalist? In the same sense as "I've got a luverly bunch of coconuts" os English nationalist.

.Come over the hills, my bonnie Irish lass
Come over the hills to your darling
You choose the road, love, and I'll make the vow
And I'll be your true love forever.

Chorus
Red is the rose that in yonder garden grows
Fair is the lily of the valley
Clear is the water that flows from the Boyne
But my love is fairer than any.

'Twas down by Killarney's green woods that we strayed
When the moon and the stars they were shining
The moon shone its rays on her locks of golden hair
And she swore she'd be my love forever.

Chorus

It's not for the parting that my sister pains
It's not for the grief of my mother
'Tis all for the loss of my bonny Irish lass
That my heart is breaking forever.

I'm not being purely facetious. Both songs do express an aspect of how people like to think of their country.