For all the stuff about politics or the anthem... whatever.
Nothing was more un-American to me than watching the team dancing and celebrating eeking out a draw against a vastly inferior team (on paper).
You have played 1 good half of soccer and that was against the Netherlands in that 2nd half. The other 5 halves have been garbage and you celebrated like you did something. Stop celebrate being average. Go take the title.
I didn't see the game but odds are they were simply celebrating the fact that they advanced.