Strange things ..

Zitat

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In the 1920s, Italian fascists adopted what has been called the Roman salute to symbolize their claim to have revitalized Italy on the model of ancient Rome. A similar ritual was adopted by the German Nazis, creating the Nazi salute. Controversy grew in the United States on the use of the Bellamy salute given its similarity to the fascist salutes. School boards around the country revised the salute to avoid this similarity. There was a counter-backlash from the United States Flag Association and the Daughters of the American Revolution, who felt it inappropriate for Americans to have to change the traditional salute because foreigners had later adopted a similar gesture.[3]



From 1939 until the attack on Pearl Harbor, detractors of Americans who argued against intervention in World War II produced propaganda using the salute to lessen those Americans' reputations. Among the anti-interventionist Americans was aviation pioneer Charles Lindbergh. Lindbergh was not a supporter of Adolf Hitler. The pictures of him appearing to do the Nazi salute are actually pictures of him using the Bellamy salute. In his Pulitzer Prize winning biography Lindbergh (1998), author A. Scott Berg explains that interventionist propagandists would photograph Lindbergh and other isolationists using this salute from an angle that left out the American flag, so it would be indistinguishable to observers from the Hitler salute.

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https://en.wikipedia.org/wiki/Bellamy_salute

There was a case in the USA, where a teacher asked his class to give the "Bellamy Salute" - which is just another name for the "Hitler-Gruß".
I think a teacher should never do that - even it was meant as part of a history lesseon.