Is the Jesus myth antisemitic?

[Agnosticsherbet]

16. The Jesus story is based on a very Jewish concept of a Mashiach.

The early, first century church, had Jewish and non-Jewish members as can be determined by Christain burials on the Mount of Olives dating the First Century. (Excavations have found remains of first century Christian burials in Israel. Clearly, they had a thriving community of some size. they bore common Jewish names from the first century Jews.)

Anti-Semitism, the word, comes from the 19th century, coined by Wilhelm Marr, German radical, nationalist and race-agitator who founded "Antisemiten-Liga," an explicitly anti-Jewish German party.
Certainly, Christians were anti-Jewish after most of the remaining Jews were killed or sold into slavery following the Bar Kochba revolt. (Jerusalem was renamed Aelia Capitolina.) From what I read, any remnant of a Jewish Christian Church was destroyed, leaving the Hellenized Christians control of their religion. Jews who did not accept that Jesus was the Messiah (Mashiach) were considered heretics.

Being a sizable minority in a world that rapidly came to be dominated by Christians, they became second class aliens, without the right to be citizens of any country.

The ascension of Christainity as the dominant religion in Europe, North Africa, and the middle east (until Islam exploded on the stage) held the basis of the modern concept of anti-Semitism.

I don't think it was essentially anti-Semitic in its origins. Certainly, after the Jewish segment of the Church was destroyed they adopted many anti-Jewish beliefs and concepts.