Because the local authorities and scholars did not believe Jesus was really the Son of God. This meant they disapproved of any followers - as being heretics.
The "authorities" that were angered were the local religious elite, Rabbis and priests who had power and money through the Jewish temple. They were angry because Jesus was preaching a way that anyone could have a personal relationship with God without using a middleman, Prior to Jesus the average person had no access to the word of God or to commune with him. It required a priest of the temple to go into the special section of the temple called the "holy of hollies" to talk to God and bring the special "words" back to the people. The people had to pay for this with money and sacrifices of animals.
The reason Jesus says not to angry is anger leads to jealousy and jealousy leads to violence.
Yes, a Catholic priest can show justified anger. He is only human. Jesus Christ, himself, showed anger, sometimes directed at the Pharisees, sometimes at his own apostles.
Jesus never prayed in anger, remember he was praying to his Father in heaven, so there would be no room for anger He may have expressed anger at times as when he upturned the tables of the money changers in His fathers house. But there was no anger in him when he went about his father bussiness. Dissapointment, maybe, when folk refused to listen to his words, even sorrow. But praying in anger, no.
In my opinion, i don't think Pilate is affiliated with evil. When the people of Jerusalem brought Jesus to him, he feared their anger should he release Jesus. He was neutral, saying that the crowd choose between freeing Jesus or the criminal Barabbas, as on that day, it was custom to release a prisoner. The crowd instantly selected Barabbas, and Pilate cleaned himself in holy water so that he may not be punished for the death of a man that was not made from his choice
Caiaphas, the high priest during Jesus' trial, revealed his anger by aggressively questioning Jesus and ultimately tearing his own robes in outrage after Jesus claimed to be the Messiah. This act of tearing his garments was a traditional sign of mourning or anger in Jewish culture, signaling his deep offense at what he perceived as blasphemy. Additionally, Caiaphas played a pivotal role in coordinating the plot to arrest and condemn Jesus, demonstrating his determination to eliminate what he saw as a threat to the religious order.
He had righteous anger. The Bible says he had never sinned in his lifetime. According to Jesus, hatred is a sin.
He presented a new law to the people and change is often greeted with either fear or anger!
Because by saying that, in the mind of the Jews, He was saying He was God because He had always existed, and many of the Jews refused to believe He was God, and they considered it blasphemy for any man to say he was God.
The responses were fear, praise and fame first in Luke 7.16,17 when he raised the young man at Nain. When Jesus raised Lazarus from the dead, (John 11), the responses were, faith in Jesus from those who believed in him and anger at Jesus and a desire to kill him and Lazarus from the Pharisees.
I have a feeling it will just work itself out... 6 years? Jesus. IMO, Either get married or move on for christ's sake.