For what it’s worth, this photo isn’t staged or from a movie. This was back before the Roman salute was popularised by the fascists.
Although it took until the US was halfway through WWII before they decided to abandon its usage so, yeah…
You can read more about it here. Tbh I liked it better when the US was mask-off about its nationalism.
In Communist North Korea, children as young as 5/6 are forced to recite prayers to the flag every day before their classes begin.