What's wrong with wanting a free, cosmopolitan, immigrant-welcoming, socialist nation that considers racists to be a disgrace and traitors to the country?
People here constantly talk about reaching out to ordinary working people and there is no better way to do that than to promote a leftist version of national pride instead of burning your country's flag, thus alienating them and completely giving way the concept of caring about your nation to the far-right while doing so.
Far-rightists aren't true nationalists, they are racists and sexists that want to further divide their nations along racial and genre lines instead of abolishing the class division and unite the nation. This is what we should be promoting.