Mark 15

"But the chief priests stirred up the crowd, so that he should rather release Barabbas to them.  Pilate answered and said to them again, “What then do you want me to do with Him whom you call the King of the Jews?” So they cried out again, “Crucify Him!” Then Pilate said to them, “Why, what evil has He done?” But they cried out all the more, “Crucify Him!” vv.11-14

Read chapter 15.
All because they believe Jesus was blaspheming they want to crucify Him.  In the Law the penalty for blasphemy was stoning (Leviticus 24:10-16), not crucifixion.  Crucitfixion was a penalty of the Roman government for treason and not one that Israel could carry out so the chief priest demand it of Pilate, this could have been Barabbas' punishment so therefore easy to transfer the punishment from one criminal to the next by the crowd.  Clearly theses priests and Pharisees are hypocrites of changing the law to get what they want out of it, taking things out of context or mixing it up.  It's interesting to think that this crowd is wanting Jesus crucified the day after all the towns people were laying down palm branches and shouting Hosanna to Him.  I believe it's because this isnt the same crowd.  We see from this chapter that it was custom for Pilate to release a prisoner, so the crowd that gathers at Pilates door most likely are followers of Barabas and want him released.  The majority of Isrealites would be at home doing all the many preparaitions for the Passover that was then and probably wouldnt have been as easily stirred up by the chief priest to let a real criminal free.  I've thought to myself today how I can be hypocritical like the Pharisees sometimes in my life with rules at work or in the state law (ex. not driving the speed limit, not being on my phone at work, etc) but then tell others what they can/cant do.  What areas of your life do you do things that will benefit you at the cost of breaking a rule or law?  What are some other times in scripture you see hypocrisy in the leaders of Israel?