It is certainly true that nationalism has its upsides. A national consciousness led to the creation of states (instead of feudal regions or city-states) and remembering traditions and your history is important because it connects you to other people. However, being a national means identifying as something; hence , you are different from others. At some points, nationalism leads to despising other populations either because they are different and have different traditions or because they are simply unknown to us. In its worst instances, nationalism has led to nazism and genocide; the notion that a nation is better than another is the start of such actions. Hence, it is important that despite having a proud knowledge of our history and our identity, we also reach out towards other cultures, accept them and learn from them.
They are what keep the environment more safe. Without funding to these people crime rates would significantly increase and would cause more danger in the environments such as roads not being properly maintained.
