The question was posted: "If Messianic Jews are targets of antisemitism like what occurred in Nazi Germany (in which they are targeted as Jews regardless of their conversion to Christianity) they probably should be allowed to immigrate, I would hope, under a special provision.  But are they actually targets of such acts now?"

The answer is YES! I belong to a Fully Jewish Synagogue which is Messianic. (USA) A few months back we had a NAZI SWASTIKA spray painted onto the street side outside wall. Jews don't consider us Jews, and the Christians look sideways at us, but Anti-Semitics don't discriminate. To them a Jew is a Jew is a Jew.