Yup. I wanted to keep an open mind, and not immediately assume it was anti-Semitic terror. Thanks to FR and Google, though, it only took a few minutes before that assumption became reasonable.
Yeah, but the more interesting question is who ... and that's not necessarily gonna have a straightforward answer in Seattle. I wouldn't be at all surprised to learn that it's some whacked out white leftist.
Then again, my memory (admittedly 20 years old) is there are quite a few neo-nazi types in the Puget Sound area as well.