I was out of the loop, so I’ll leave this here for anyone else who is as well: https://rationalwiki.org/wiki/Stolzmonat

Thank you both for pointing out that this is not a positive symbol.

It’s not clear in the article that was posted, but that preview image is Adam Driver.

He’s in the film as a character named Caesar, according to this other article showing Driver in the same costume:

GQ