Doesn't matter. Arrogance is a vice that must be tamed, and if possible, destroyed as quickly as one encounters it on oneself, whether as a person or as a nation. What other people do, or are, is irrelevant to that point.
Arrogance is an emotion (intention), and a behavior (action) that arises in any applicable situation, whether one is a deluded manager of a Burger King or sitting passively in one's couch imagining the faultless glory of the American people.
My citation of the American Dream is just an awkward way of making a point relatable, and its arrogance is limited to how it is popularly (and, at an individual level, personally) conceived and practiced.
Pride is just a general term for a string of sensations and behaviors where one (1) takes pleasure in one's achievements (2) develops a conscious understanding that these achievements increase their value as a person. Self-confidence develops the emotion to the point where one gets a functional comprehension of one's abilities. It ends (and humility begins) when one encounters a situation that exceeds their ability to handle, or at least, which poses a serious challenge to such ability. Arrogance carries pride past that point, to the extent it is incapable of acknowledging both internal and external limits. In everyday behavior, this manifests itself in In certain individuals habitually treating others with derision, valuing neither their time, thoughts, or help, but often depending on these things in one way or another to realize ambitions. Prima donna actors, for example, don't value the assistance of "the help," but nonetheless are very dependent on "the help" to succeed.
At a national level, it manifests itself as an unwillingness to believe that the nation has made grave errors in its handling of different situations, particularly its treatment of other human beings. I would suggest Native American policies during the 19th century, and putting down democratic movements in the Middle East during the Cold War, as examples. In these cases, an arrogant person is psychologically incapable of recognizing the political entity he identifies and associates himself with has done evil.
I often consider such delusion more evil than the evil action itself. It should be common knowledge that human beings have evil in them, which must be conquered, but denying the reality of it to such an extent suggests an unwillingness to acknowledge the evil in oneself and improve upon it which I find diabolical. You might take Holocaust denial as a comparison.
