For me this all boils down to one group of people feeling fiercely that the national anthem must be played before a game and everyone must stand otherwise they feel disrespected vs another group of people who feel fiercely that racism occurs everywhere and on a daily basis and the country needs to do better.
Some are proud no matter what and feel that others should show pride too. The others feel excluded, dismissed, oppressed and, are showing that by kneeling.
There are strong feelings on both sides.
The flag, the country, and the anthem belong to all of us. We don't get to tell each other that we don't matter.
We need to work this out. That, for me, is America. Coming together is more important than anything else, including the anthem.
The NFL can try this but, as long as people are not united in addressing rampant social injustice, protest will continue.