Theophylact of Ohrid

Notice then the bloodthirstiness of the Jews and the moderation of Pilate (although he too is worthy of condemnation, because he did not firmly stand up for the righteous man). For they cried out, "Crucify Him," while he, though feebly, nevertheless attempted to free Jesus from condemnation. Therefore he asked again, "What shall I do with Jesus?" — trying to give them the opportunity to release the Lord as innocent, which is why he delayed and put it off.

Commentary on Mark ↗

Augustine of Hippo

Inasmuch as he was quite aware of the fact that the Lord was suspended on the cross by the soldiers, and not by the Jews, as John most plainly affirms, his hidden object [in bringing in the said clause] was to convey the idea that those parties who cried out that He should be crucified were the Lord's real crucifiers, rather than the men who simply discharged their service to their chief in accordance with their duty. We understand, accordingly, that it was the third hour when the Jews cried out that the Lord should be crucified. …

The Harmony of the Gospels, Book 3 ↗

Bede

But Pilate again, answering, said to them: What then do you want me to do with the king of the Jews? But they again shouted: Crucify him. However, Pilate was saying to them: What evil has he done? Pilate gave many opportunities to free the Savior: first, comparing him to the thief, then saying: What then do you want me to do with the king of the Jews? …

On the Gospel of Mark ↗