It's called respect, not nationalism.  It's something the millennials lack.  along with work ethic and drive.  And good attitude.  And no, I have no response to your fellow millennials who were standing around disrespecting the national anthem as much as you were.  I don't find disrespecting the national anthem as bad as bad as I find burning the flag.  Sure, go ahead and protest using those methods.  Personally have more respect for them and chose to protest via different means.  And I am in the vast majority.