For those of us who don't know who these people are.....
Neturei Karta (Aramaic: ðèåøé ÷øúà; "Guardians of the City"), is a group of Haredi (Ultra-Orthodox) Jews who reject all forms of Zionism and actively oppose the existence of the State of Israel.
They are mostly concentrated in Jerusalem, with devotees in and around New York City, Ramat Bet Shemesh near Jerusalem, the Old City of Safed, and Bnei Brak. Estimates of their membership range from 5,000 to less than 1,000. Other groups associated with Neturei Karta, can be found in London, Vienna, Antwerp, New York City, and other parts of New York state.
Other Orthodox Jewish movements, including some who oppose Zionism, have denounced Neturei Karta's activities; according to The Guardian, "[e]ven among Charedi, or ultra-Orthodox circles, the Neturei Karta are regarded as a wild fringe".  Neturei Karta claims that the mass media deliberately downplays their viewpoint and makes them out to be few in number. Their protests in America are usually attended by a few dozen people. In Israel, several hundred is typical, depending on the nature of the protest and its location. 
Neturei Karta are sometimes mistakenly confused with Satmar Hasidim, due to their similar mode of dress, and some similarities in their anti-Zionist ideology.
They sound like the Jewish version of the Phelps of Westboro "Baptist Church" infamy.