The best texts read ἐκεῖνοι, those (people). The pronoun of remote reference isolates and sharply distinguishes them from Jesus. See on Joh 13:27.
Away with him (ἆρον)
Literally, take away.
We have no king but Caesar
These words, uttered by the chief priests, are very significant. These chief representatives of the theocratic government of Israel thus formally and expressly renounce it, and declare their allegiance to a temporal and pagan power. This utterance is “the formal abdication of the Messianic hope.”