“There have been incidents of “Russian Jews” emigrating to Israel and turning out to be neo-nazis. ”
Do you mean classical “exterminate Jews” Nazis, or just “firmly against socialism and the Left’s agenda” Nazi?
https://www.jta.org/archive/aliyah-from-former-soviet-union-brings-a-surprise-anti-semitism
…Anti-Semitism also is surfacing in other Israeli venues: Arbat, a bookstore with branches across Israel, sells books imported from Moscow with titles such as “The Holocaust Myth” and “Jewish Fascism in Russia.”…