The original salute to the american flag, done while saying the Pledge of
Allegiance was the origin of Adolf Hitler's "Nazi" salute under the National
Socialist German Workers Party (Nazis). It was not an ancient Roman salute. It
occurred because Francis Bellamy (an American national socialist) began the
Pledge with the military salute (hand to eyebrow) and then extended the gesture
toward the flag. In practice, coerced children merely extended the military
salute, palm down. It was done robotically in the USA in schools for three
decades before German National Socialists imported it. See various film
examples on youtube, various old photographs in web searches, and the work of
the symbologist Dr. Rex Curry, who made the discovery. There are many people
who are trying to cover up the discovery and hide the truth. The government
schools will certainly never mention it. If people knew the truth no one would
perform the pledge and it would fade away.