Conscious that our sins strike Christ Himself, the Church does not hesitate to impute to the Christians the gravest responsibility in the torture of Jesus, a responsibility they have too often heaped on the Jews :
"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 again the Son of God for themselves, and make a mockery of Him" (Heb 6:6).
This guilt seems even more enormous in us than it does in the Jews, since according to the testimony of the same Apostle: "If they had known it, they would never have crucified the Lord of glory" (1 Cor 2:8); 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)
"As for the demons, they are not the ones who crucified Him; it's you with them who crucified Him and still do, by revelling in vices and sins."
(Saint Francis of Assisi)
N.B. And also this passage from the Declaration "Nostra Aetate" of Council Vatican II, § 4: "True, the Jewish authorities and those who followed their lead pressed for the death of Christ; still, what happened in His Passion cannot be charged against all the Jews, without distinction, then alive, nor against the Jews of today."