Looks like the story keeps changing, it was being reported as “three down arrows” a few hours ago, now, as you say, “an up, right and three down arrows” which I absolutely agree is a Helldivers 2 reference.
Just like the supposed “transgender ideology” that turned out to be the TRN stamp from Turan Ammo, I daresay the details of the other engravings will change a couple more times before they actually release pictures of them.
He put the Antifa ↓↓↓ on there too, though. Along with another casing with the lyrics to Bella Ciao. I can’t see someone that’s not in the anti-fascist space thinking of putting those markings onto casings, honestly.
I would love for it to be a Groyper just to have every conservative awkwardly ignore that the past couple days happened and scramble to cover their tracks.
Edit: They have now been named as Tyler Robinson, and the evidence points to them being very much in-line with Antifa 😔
Remember, if you recognise him - you don’t.
I mean, I agree with you, but I don’t see what that has to do with this post?