What Judaism teaches
Christians cannot be following the true God who teaches them to love others since the Jews have been persecuted by Christian nations.
Christian nations also did not help the Jews during the holocaust.
Both religions – Judaism and Christian – teach the importance of loving others. Yet both religions have adherents that do not live their lives according to this tenet. This cannot be used to prove that Christianity is false any more than citing examples of Jews persecuting Christians to prove that Judaism is false.
Early church history tells us that the Jews severely persecuted the Christians and even today, this continues to be so.