Christianity may have been intended to be good news but has been bad news to Jewish people and, sadly, one must look at the history of official Christianity, Roman Catholicism, Russian Orthodox Christians, and all denominations of the church which have consistently pressed and persecuted the Jewish people in the name of Jesus.
By about the time you get to the 4th century, the general idea was that the Jews killed Jesus. Therefore, ‘the Jews were under a curse’ and, they had to be oppressed and cast out of society, they had to be treated as a second-class people and even expelled from countries.