I don't think we really do it to impress, as such... Merely to reaffirm our social superiority.
Everyone loves a comic.
What, like burning the flag?

Also, is this the same US that gets offended over the slightest thing, of late?
Burning the flag is protected by the 1st Amendment, as it’s seen as symbolic of speech, and the most recent attempt at a “Desecration Amendment”, was defeated in Congress by one vote in 2006.
It seems a great many of them are proud enough of their various foreign roots that they rather promote their own foreign stuff than that f other foreigners.
But the real problem is racism rather than classism - As Reginald D Hunter says he explains it to his countrymen: "The British have to have the class system, because they're so crap at being racist"!!