The term for extreme nationalism is nativism, which can lead to racism.
Nazi
Italian fascism
This is a slightly silly question or possibly one that hasn't been expressed very clearly. Is it liberal nationalism versus extreme nationalism? Or is it liberalism versus extreme nationalism?C.Glasnost
Fascism was rooted in extreme NATIONALISM.
Ultranationalism - very extreme nationalism.
It may mean nationalism and xenophobia of the 'anglo-saxons' or white anglo-saxon Americans. Chauvinism means nationalism and xenophobia, although its meaning has changed recently, in this case I'm sure it means xenophobia or even racism. The term suggests the nationalism and racism of so-called 'anglo-saxons' in 20th century America againist other ethnic groups, who they deemed inferior.
Fascism
Hitler
Very extreme... some people would die to stop it and some people did.
fascism
military action in the name of superiority
Institutional racism