It wasn't the romans fault they even gave the people a chance to set him free and be free of all his crimes but the people choose to set a murder free. The romans we're just following orders. They were more like police being told what to do by the church. It was actually the Jewish people that had him killed. Because he threaten their way of life and religion.
The romans didn't give 2 shits if you had a different god. As long as you 1. Acknowledged theirs and 2. Paid your taxes they couldn't have given less fucks. The Christians wanted their god acknowledged and refused to acknowledge anyone else's and that's why they had bad shit happen
But still, he was talking about a different faith.
So the Romans got triggered