Question about Jewish Passover traditions regarding letting convicted felons go free(story in gospel)?

So according to the gospel the Jews allowed for one convicted felon to go free on Passover each year and instead of choosing to free Jesus they chose to free Barabas. Is this tradition of letting a convict go on Passover documented and varifiable? Is there any other instances of this happening in history? Would... show more So according to the gospel the Jews allowed for one convicted felon to go free on Passover each year and instead of choosing to free Jesus they chose to free Barabas. Is this tradition of letting a convict go on Passover documented and varifiable? Is there any other instances of this happening in history? Would the Romans really allow this to happen under their rule or is this just another fabrication in the NT to paint the Jews as "of the devil", as Jesus said.
Update: ummm, which part do I have right??
Update 2: John 8:44 "You (Jews)are of your father the devil, and you want to do the desires of your father. He was a murderer from the beginning, and does not stand in the truth because there is no truth in him. Whenever he speaks a lie, he speaks from his own nature, for he is a liar and the father of lies.
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