The NFL players aren't the only ones who dont/wont stand during the anthem.....when I was a kid in school there were a group of jehova's witness who wouldn't stand during our Canadian anthem in school. One time during the anthem a female teacher lost her schitt and came over and grabbed one of these 4-5 male students and pulled him to his feet and said " at least you can have the decency to stand for the National anthem".
This was 45 years ago and I now realize the importance of her actions, way to go lady teacher and after my grandfather fought in 2 world wars I will always teach a standing posture for a civilized countries National anthem.
They should be fired....I cant remember his name but a great football coach said "do you know how I motivate my football team? I get rid of the guys who aren't motivated....so true.