So now term "fundamentlist" is extended to JEWS?
A Messianic Jew is a Jewish person who believes that Yeshua (Jesus) is their Messiah. Some people think that a Jewish person who believes in Jesus is no longer a Jew. But what could possibly be more Jewish than believing in the Jewish Messiah, Yeshua?
Sounds as if the Messianic Jews consider themselves Christians, too.
And fwiw, why can't a Jew be classified as a "fundamentalist"? I think that term can be applied to ANY religious practitioner who exhibits certain traits.
To be sure, the radical Islamists are "fundamentalist Muslims."