For the same reason that the Christians were angry at Muhammad and his teachings. They viewed them to be the incorrect way to do things and felt he would try to convince other people from the correct ways at the time. Obviously we see things differently today, but for the time, religion was a very important thing that even speaking against the major religion got you burned as a heretic.
It is important to understand what the political climate was in the first century. Rome was the first and last word on all things. Pontius Pilate was there as the long arm of the Roman Empire, ordered to keep peace among the locals. Jesus upset the Jewish leaders and Rabbis, not so much the Roman leaders in the area. But the Jewish leaders used their influence and the threat of civil unrest to provoke the Romans to put Jesus to death.
The Pharisees which were Jewish religious leaders
He said he was the King of all the Jews.
The Sadducees opposed Jesus, they were the Temple , priestly group. He was also opposed by some of the Pharisees who were the faction which represented the Lay folk.
The Jewish leaders did not like Jesus. He taught and preached the true word of God. Many of the people were beginning to believe in Him and turning away from the Jewish leaders teachings. So they crucified Jesus and thought they had got rid of the problem. They could now go on teaching in their perverted ways. But what happens? Here the apostles of Jesus start teaching the ways of Jesus and even healed a few persons. This upset the Jewish leaders. They thought they had got rid of the problem and now it was manifesting itself again. The leaders told the apostles to stop teaching in Jesus' name. This is all they could do because the true cause, "the way" was so popular killing the apostles would be a big mistake. The apostles did not stop preaching, and this is a good lesson to whether we should obey man or God, when it come to the important things of God.
to wait
The Jews are blamed for the death of Jesus because it was the Jewish religious leaders who manipulated Herod and Pilate into crucifying Jesus by charging Jesus with breaking certain Jewish laws making him worthy of death. The Romans would have rather released Jesus that day and crucified Barabbas. But the Jewish mobs at the behest of the Jewish leaders clamored for the release of Barabbas and the crucifixion of Jesus.
heresy
Sabbath.
Mostly because He refused to accept the teachings of the oral law.
Jesus knew the Jewish scriptures well but seemed to contradict what they thought was the Law. Jesus challenged their interpretation of the Law.
Yes, Jesus greatly upset the religious rulers of the day who did not appreciate him exposing their hypocrisy and legalism. The messages of Jesus continues to upset people today resulting in the persecution and intolerance levelled against His teachings and followers, even by those who are tolerant of the teachings of other religious leaders.