Hmmm ... maybe that name (Chauvin) should have been a clue ...
Chauvinism is a form of extreme patriotism and nationalism and a belief in national superiority and glory. It can also be defined as "an irrational belief in the superiority or dominance of one's own group or people".[1] Moreover, the chauvinist's own people are seen as unique and special while the rest of the people are considered weak or inferior.[1]
According to legend, French soldier Nicolas Chauvin was badly wounded in the Napoleonic Wars. He received a pension for his injuries but it was not enough to live on. After Napoleon abdicated, Chauvin was a fanatical Bonapartist despite the unpopularity of this view in Bourbon Restoration France. His single-minded blind devotion to his cause, despite neglect by his faction and harassment by its enemies, started the use of the term.[2]
Chauvinism has extended from its original use to include fanatical devotion and undue partiality to any group or cause to which one belongs, especially when such partisanship includes prejudice against or hostility toward outsiders or rival groups and persists even in the face of overwhelming opposition.[2][3][4] This French quality finds its parallel in the British term jingoism, which has retained the meaning of chauvinism strictly in its original sense; that is, an attitude of belligerent nationalism.[4][5][6]
https://en.wikipedia.org/wiki/Chauvinism