Yes, some of the Jewish nation was responsible for the death of Jesus, but THAT WAS GOD's PLAN ALL ALONG. All throughout the Tanach God said that he was going to send the messiah into the world and he would be rejected by most of the Jewish nation in the same way the prophets were rejected before him. They know this and they will bear the consequences. Do you as the Jewish nation obey God and follow the commandments as written in your Torah? Well then you have nothing to fear since you are and always will be and always have been God's chosen nation. I do not condemn the Jews as a nation for what happened to my Jesus, rather I pray that come judgement day that God has mercy upon those responsible for his death, for his wrath will be poured out upon them.