Yes it's protocol to place your hand over your heart during the National Anthem, FYI you're supposed to remove your hat if you're wearing one.
Not acknowleging the playing of the Anthem by standing with your hands by your sides or shuffling your feet and looking like your're bored became fashionable with libs as a way to "protest" the "oppression" the American Flag stands for and "all it reppresents".
Okay, thanks for clarifying that.
FYI you're supposed to remove your hat if you're wearing one.
That's what I said.