I think it stays. It is a custom/tradition just like the flag salute in schools. However, a child cannot be forced to salute the flag or receive punishment/discpline if they do not (religious reasons etc.)
https://en.wikipedia.org/wiki/West_V...on_v._Barnette
The country is comprised of all types of people with differing backgrounds, religious and political views. Some come from military families, are die hard American patriots who believe you should die for and plege allegiance to your country.
Others are just just peaceful law abiding citizens who reside here, pay taxes but don't agree with some of the values of the country, injustice, history of wars and innocent bloodshed so they refuse to participate in customary traditions. They still honor and obey public officials, law enforcement, those in the military and the service they perform and respect and feel compassion for any and all loss of human life.
An individual should be able to have the right to choose based on their own personal beliefs whether or not to stand, sit, kneel, sing or not participate during such traditions that are included in the place of employment or at school without fear of losing their job or receiving discipline. As long as the individual is peaceful and their behavior is not noisy or disruptive to others around them who choose to participate.
Just remember, at one time people were actually killed for not saluting (Hitler).