National anthem in schools - Anthem a way to show pride

There is a huge difference between the aggressive nativism shown by Trump, Putin, Orban, and Brextremism and an expression of a calm, non-confrontational pride in your country. One can, and often does, lead to aggression.
The other reassures and generally inculcates the kind of civic spirit that makes for good, stable societies. Speaking in Chicago, during St Patrick’s Day celebrations, Taoiseach Leo Varadkar suggested that all Irish schoolchildren be taught our national anthem, though he did not suggest that learning it, much less singing it, should be mandatory.