I'm not talking about patriotism. I'm talking about the Iranian view that America came into their country to interfere with their self determination, they kicked us out and we are still interfering with their self determination via sanctions -- like an abusive parent that continues to stalk an adult child who fled home.

Given that the US gives Iranian Nationals no means to get free of the black mark against them for simply having been born there, they don't have to feel any loyalty whatsoever to their country to be intensely against what the US is doing to them.

See: https://news.ycombinator.com/item?id=20302694