That type of salute has been around long before the Nazis. Middle East armies used the salute long before the Nazis adopted it. The use of this type of salute by Middle East groups and armies predates the Nazi Party. The same goes for the Swastika. The Swastika was used in some U.S. Army units before WWII and long before that by Native Americans.
It wasn't so long ago that this was a regular sight in the U.S. - Bellamy salute (Civilian Salute)