[AndrewC]

Nationalism is the egg that hatches fascism.

Ahh, so the elimination of nations would solve the problem. Okay anarchist, which village you gonna belong to?

[MrB]

Nationalism doesn’t lead to fascism,

fascism leads to fascism
socialism leads to fascism
central planning leads to fascism
thinking you know better than others leads to fascism

He must be thinking of national SOCIALISM, Nazis.
Of course, they were just fascists that happened to be strong patriots, but they were FASCISTS first.