The Jews did not enter into the palace of Pilate because they wanted to be able to eat the Passover meal. They couldn’t go into Gentile property after 6:00 pm.  At 6:00 pm the new day began, a Sabbath day. This is confirmation that THE Passover meal had not been eaten yet.

“…it was out of envy that the chief priests had handed Jesus over to him.”
Pilate knew what they were doing and that they set Jesus up, using the political powers to do their dirty work. Pilate was under investigation by Rome for cruelty. He may have been in fear of Rome if he killed an innocent man. They were envious of Jesus. People were following after Jesus and listening to Him instead of the religious establishment of the day.

Pilate asked Jesus what crime He had committed. Jesus tells Pilate that His kingdom is not of this world. Many or most of His followers thought His kingdom WAS of this world. They were looking for a conquering Messiah who would usher in a political kingdom.

Jesus said, "Everyone on the side of truth listens to me."
Those people who are seekers of the truth want to know the truth even if it contradicts what they want to believe.

When Pilate asked the people what crime Jesus committed, they never answered his question, they just shouted to crucify him.

Pilate asks again and again trying to get Jesus released, he fails again and again. Finally he gives up and “washes his hands”.

The people answer “Let his blood be on us and on our children.” Curses are called down and the suffering continues to this day.

For more information on the six illegal trials of Jesus see the website.
http://www.philandpatti.com/abiblicalviewofholyweek
(Part 2 and Part 3)