Identification with the rag called the national flag is an emotional and sentimental factor and for that factor you are willing to kill another - and that is called, the love of your country, love of the neighbor . . .? One can see that where sentiment and emotion come in, love is not.
Jiddu Krishnamurti (1992). “The Collected Works of J. Krishnamurti: 1966-1967 : Perennial questions”, Kendall/Hunt Publishing Company