"Then last of all he sent his son to them, saying, 'They will respect my son.' But when the vinedressers saw the son, they said among themselves, 'This is the heir. Come, let us kill him and seize his inheritance.' So they took him and cast him out of the vineyard and killed him. ... Now when the chief priests and Pharisees heard His parables, they perceived that He was speaking of them." (Matt. 21:37-39,45)
"Therefore let all the house of Israel know assuredly that God has made this Jesus, whom you crucified, both Lord and Christ." (Acts 2:36)
"The God of Abraham, Isaac, and Jacob, the God of our fathers, glorified His Servant Jesus, whom you delivered up and denied in the presence of Pilate, when he was determined to let Him go. But you denied the Holy One and the Just, and asked for a murderer to be granted to you, and killed the Prince of life, whom God raised from the dead, of which we are witnesses." (Acts 3:13-15)
>If the RCC can uniterally exonerate those 1st century Jews in the death of Christ, why not Judas? <
The Jews are no more responsible for killing Christ than you and I are.
Jesus forgave the Jews and the Romans from the cross.