All those fans that love seeing the huge flag carried onto the field should read the Code of Flag Ethics.

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the U.S. Flag Code states the American flag should never touch anything beneath it, including the ground, floor, or water, as this is considered disrespectful and risks soiling or damaging the symbol of the nation. It should always be carried aloft and free, not flat or horizontally, though it can be displayed flat against a wall or in a window as long as the union (stars) is uppermost and to the flag's own right (observer's left).