Jesus' not answering Pilate's questions is a fulfillment of the prophecy found in Isaiah 53:7 "He opened not His mouth." Jesus knew what the outcome would be. Crucifixion on a cross was part of God's redemptive plan way back in time before the creation of the world. Personally, where would we be if Jesus hadn't bore our sins in His own body on the tree.
Pilate thought he could get Jesus released when he offered a choice of Jesus or Barabbas. Surely the Jews would choose Barabbas, a convicted criminal, and let an innocent man go free, right? But that was not the case. It was not to be because of their hatred and even more so because it was part of God the Father's plan for our salvation from the very beginning. Pilate gave in to the pressure when he found he couldn't prevail over the people's wishes and he allowed Jesus to be taken and crucified. He didn't understand that Jesus' death on the cross would provide salvation for everyone, including him. We can say what we want about Pilate. He washed his hands saying that he wanted nothing to do with His death. I find it interesting when the Jews stated: "His blood be upon us and our children." Could that possibly have anything to do with what the Jewish people have gone through? I personally don't know, but it is cause for wonder considering all our choices have consequences either good or bad. What does the death of Jesus mean to you? I know what it means to me. He is everything to me.