How can the concept of a national identity divide people?
A strong sense of national identity can unite people by making a group of individuals feel like part of a cohesive whole. [ For example, after the terrorists attacks on 9/11, this country experienced the strongest sense of national identity I have personally ever witnessed. Every car had a flag attached to the antenna, every shop had a collection jar to help fellow Americans, and so on. A strong
sense of national identity helped American heal from our wounds. We were all proud to be Americans.
However, all of this good feeling had a downside. People who were NOT Americans, especially Arabs, were immediately suspect, an "Us-versus-Them" mentality quickly set in. Mosques were vandalized, threats were made, and a sense of foreboding and prejudice against anyone who looks to be Middle Eastern continues to this day. ]
There are no new answers.