Act 2:22 ¶ Ye men of Israel, hear these words; Jesus of Nazareth, a man approved of God among you by miracles and wonders and signs, which God did by him in the midst of you, as ye yourselves also know:
Act 2:23 Him, being delivered by the determinate counsel and foreknowledge of God, ye have taken, and by wicked hands have crucified and slain:
Act 2:24 Whom God hath raised up, having loosed the pains of death: because it was not possible that he should be holden of it.
Some individual Jews at the time did conspire to condemn Jesus. As Nostra Aetate said, however, not all Jews then, nor all Jews now, are responsible for his death, so collective guilt of all Jews cannot be held to be Catholic belief.
The question was: did all the Jews of His day, or all the Jews of succeeding ages, share a collective guilt for this murder/deicide? --- and the answer is "No."
Particular men, Judas and Caiaphas and Pontius Pilate and the guys with flails and hammers in their hand,s Jewish and Roman, had particular responsibility for a false judicial judgment, torture and a murderous execution.
In the larger moral sense, the sins which nailed Him to the Cross where yours and mine.
But you knew this.
“Well I was taught...”
Well, we all know that you weren’t taught correctly about anything to do with the Catholic Church...
..so next...