The idea or movement that promotes the positive or constructive side in a country especially in the aim of betterment of his country and the people.
An example of constructive nationalism, At various points in U.S. history, the sense of nationalism has been a positive force like abolition of slavery and equal rights.
2. Destructive :-
The idea or moment that promotes the negative or destructive side in a country especially in the aim of destroying the fundamentals or people sovereignty.
An example of destructive nationalism, Nationalism in UK destroyed the fundamentals or sovereignty of the people wherever they colonised.