Are the Jews who were not involved in the plot to kill Christ innocent?

Lev 5:   17 If any one sin through ignorance, and do one of those things which by the law of the Lord are forbidden, and being guilty of sin, understand his iniquity,  18 He shall offer of the flocks a ram without blemish to the priest, according to the measure and estimation of the sin: and the priest shall pray for him, because he did it ignorantly: and it shall be forgiven him,  19 Because by mistake he trespassed against the Lord.

Here is an exegesis from Catena Aurea; 34. Then said Jesus, Father, forgive them; for they know not what they do. And they parted his raiment, and cast lots.

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CHRYSOSTOM. Because the Lord had said, Pray for them that persecute you, (Matt. 5:44.) this likewise He did, when He ascended the cross, as it follows, Then said Jesus, Father, forgive them, not that He was not able Himself to pardon them, but that He might teach us to pray for our persecutors, not only in word, but in deed also. But He says, Forgive them, if they should repent. For He is gracious to the penitent, if they are willing after so great wickedness to wash away their guilt by faith.

Denzinger 

COUNCIL OF SENS * 1140 or 1141

The Errors of Peter Abelard *

377 10. That they have not sinned who being ignorant have crucified Christ, and that whatever is done through ignorance must not be considered as sin.

Ignorance did not excuse them