I don't know why the YouTube embed is disappearing. Here is the link.
And so whose fault was it? According to the Council of Trent, yours and mine:
"Reasons Why Christ Suffered""Furthermore men of all ranks and conditions were gathered together against the Lord, and against his Christ. Gentiles and Jews were the advisers, the authors, the ministers of his passion: Judas betrayed him, Peter denied him, all the rest deserted him. ... In this guilt are involved all those who fall frequently into sin; for, as our sins consigned Christ the Lord to the death of the cross, most certainly those who wallow in sin and iniquity crucify to themselves again the Son of God, as far as in them lies, and make a mockery of him. This guilt seems more enormous in us than in the ancient Jews, since according to the testimony of the same Apostle: if they had known it, they would never have crucified the Lord of glory; while we, on the contrary, professing to know him, yet denying him by our actions, seem in some sort to lay violent hands on him.”
-- Catechism of the Council of Trent, XVI cent.