Meanings of romantic nationalism in English

Israel is not exempt from the problem I have with romantic nationalism.

I actually think the most dangerous thing in the world is romantic nationalism.

Not religion, but romantic nationalism.

There's romantic nationalism for you.

He is best-known for his association with the romantic nationalism of the Young Ireland movement and for such lines as:

The retrospective is divided into seven galleries, or themes, such as the romantic mind, romantic gothic, romantic nationalism and romantic naturalism.

But that trait has been submerged in a torrent of romantic nationalism that sweeps rational query aside and dismisses practical objections as deficient patriotism.