I'd go even further: our current presidential administration spends a lot of energy telling us that America sucks because the people in it suck, the government they built sucks, and the ideals they aspire to suck, and that the solution is to deal out cruelty to the right kinds of people.
I don't understand how anyone can listen to that bilge and interpret it as any kind of patriotism at all, but they do. The hyper-nationalism and bravado are a natural result of an underlying emotional condition apparently shared by about a quarter of the populace: an inability to feel pride in anything but the capacity to dominate.
This is why a few sentences by Warren Buffet feel like such a breath of fresh air. It wasn't always like this, Buffet's far more constructive and positive sentiment is perfectly normal.