Who is responsible for Christ's death?

Of the five discrepant biblical accounts of Jesus' trial, composed decades after his execution by men absent from his trial, none are very helpful, nor are the disciples very trustworthy sources. We know that early Christians put great emphasis on staying on the Romans' good side lest they lose potential converts or, worse, be massacred or driven out of Rome and Jerusalem like their Jewish brethren. It is not surprising then that early Christians would blame "The Jews" (who were even then the universal scapegoats) for Jesus' death, and that Matthew would make sure that 2,000 years hence "The Jews" would still be on the hook, by attributing to the Jewish multitude the fantastic quote: "His blood be on us and on our children." A peculiar thing for a Jewish mob to shout, it must be said. The Gospel writers are exceedingly clumsy in dealing with the trial of Jesus. Again and again the Roman prefect Pilate comes off not as the iron-fisted autocrat we know from history but as a lame, ineffectual pamby who is prevented from setting Jesus free by the bloodthirsty Jewish mob. The scene stretches credulity. Likewise, many scholars dispute the accuracy of the Jews' claim that Roman law forbids them to execute Jesus. In fact, the Jews of Jerusalem executed each other all the time. They stoned Jesus' brother James, and only a year or two after Jesus' death they stoned Stephen, the traditional first Christian martyr. A well-known sign (in Greek) in the Jerusalem temple promised death to any non-Jew who invaded the inner sanctum.