In western religions, it is almost axiomatic that religious "authenticity" is on the right and that heresies are on the left. I challenge that.
Attached is a photo of Neturei Karta staging a counter protest in support of Iran. This group should be regarded as a heresy. They espouse a cult which they call "Judaism," but which is a parody of the Jewish religion. It is characterized by ritual fetishism, an inability to distinguish between what is important and what is not and, worst of all, that they have broken faith with the rest of the Jewish people, willingly giving aid and comfort to our enemies.
It has been established that some of their leadership have been on the payroll of the Palestinian Authority.
The Iranian regime had threatened to wipe Israel off the map and engages in Holocaust denial. Further, Tehran has an abysmal human rights record. It is inconceivable that a Jew should willingly defend them, yet this group of heretics does just that. The anti-Semites revel that "real Jews," or at least those whom they *think* are "authentic" endorse their sinister vision.
Formal excommunication is a difficult subject to broach insofar as there is no universal rabbinical authority. Nevertheless, it is unnecessary, as these fanatics have already separated themselves from world Jewry.