I mean it literally could be a multitude of things. From a normal hand position posed for a picture, the dick game (which was a military favorite) to live long and prosper whoever, whatever, I dont know!
So while people are expending resources, scouring the internet to oust these white power photos. Or looking ridiculous accusing them of it, it was just as ridiculous as trying to defend a false internet meme that the LGBTQ community was wanting to accept pedos into the fold (which was later proven false).
This should be the message to this shit, if there even has to be one. You lay down with racists, dont expect suprised when you get lumped into with them.
If a black man kneeling during the anthem is somehow pissing you off, congratulations. You have something similar with the Klan.