I think you are quite right to allude to what you might call the negative identity of those movements, which is much more powerful and much more important, frankly speaking, than are any of the positive proposals they are making. They definitely stand for a type of community defined through ethnonationalist ideology.
At the end of the day, the ethnonationalist type of community is very much defined by who does not belong, by the construction and the reconstruction and the reproduction of the enemy image. The enemies are ethnic minorities, religious minorities, ideological opponents and also sexual minorities. The targets change. We see there are a lot of targets to choose from, but the basic idea is relatively simple: It is the hatred of the other.