just the first article that came up when I googled it.
Not a big fan of the concept of "dog whistling", as it becomes very easy to accuse anything of being a "dog whistle", much like the example outlined in that article. The concept of a "malevolent [entity] in the shadows" is obviously a well known, anti-Semitic trope, but Waters is clearly talking about the forces of "extreme nationalism"* in that statement, which would point to him not intending to mean Jews.
*I don't agree with the point that "extreme nationalism" has provoked the invasion, in case anyone thinks that, but Waters clearly does.
