Mark 15: Jesus is crucified as king of the Jews

Jesus in the cross was mocked:

MSG: 31-32 The high priests, along with the religion scholars, were right there mixing it up with the rest of them, having a great time poking fun at him: “He saved others—but he can’t save himself! Messiah, is he? King of Israel? Then let him climb down from that cross. We’ll all become believers then!” Even the men crucified alongside him joined in the mockery.

NASB: 31 In the same way the chief priests also, along with the scribes, were mocking Him among themselves and saying, “He saved others; He cannot save Himself! 32 Let this Christ, the King of Israel, come down now from the cross, so that we may see and believe!” Those who were crucified with Him were also insulting Him.

When reading the gospels, mainly Mark, Jesus told many times not to talk about his miracles. Did Jesus want people to believe that he was the Messiah? If so, why to hide his miracles? Some say that Jesus didn't want to be known as the Messiah because the people would want to set him as some kind of general against the Romans. Anyway, in his crucifixion, the high priests and others were mocking Jesus as if Jesus wanted them to believe in him. In the gospel of Mark, Jesus openly say that he was the Messiah next to his death. In a way, Jesus was killed because he revealed himself as the Messiah (when the high priest asked to Jesus if he was the Messiah). There were many others who claimed to be the Messiah but is it enough to trouble the high priest? Was the high priest asking himself if Jesus was the Messiah? Maybe.  The statement: "Let this Christ, the King of Israel, come down now from the cross, so that we may see and believe!" suggests a thought coming from the high priest because it was very important that the high priest would welcome the Messiah.