I agree that people should not be required to stand and place their hand over their heart, etc. That being said, I do believe that those who do not want to take part in the anthem should at least be quiet and show respect for those who do. I don't think it is too much to ask that they be considerate of others for a minute or maybe two.
James
well, I don't care where you place your hand, but standing up is an international show of respect. It's common courtesy, showing you were not raised in a barn!