SFPD arrest man suspected of firing blank rounds inside synagogue, bringing gun into theater https://abc7news.com/sf-synagogue-shooting-arrest-made-suspect-gun-in-theater-schneerson-jewish-center/12770105/
He's been identified as Dmitri Mishin, 51 of San Francisco. His twitter feed is about what you'd expect.
In addition to the Nazi markers, he's obsessed with Kate Middleton and Elon Musk.
If you're curious about that rune logo above, it's from The Ahnenerbe think tank, founded by Heinrich Himmler. https://en.wikipedia.org/wiki/Ahnenerbe
I suspect a psych eval is in his near future.