Because Rome never went to war with Israel, and because of the treaty that they had made with the Jews, Rome didn't practice torturing Jews at the Coliseum.  That fate was reserved for Christians who were proclaiming Jesus as King.  The Jews didn't recognize Jesus as their King.   Christians did.  Christians refused to acknowledge Caesar as God and--as a result--were committing treason.

In their  treaty with Rome, they--the Jews--were excused from recognizing Caesar as God.  The treaty between Rome and Israel saved Rome the expense of a war, and the Jews were left alone to practice their religion as they saw fit.  However, it allowed Rome to come and go across Israel as they expanded their territory.  In many ways it was a win/win situation.  Israel was protected from her enemies, and Rome incorporated the territory peacefully.  And the Jews kept their God.

But along came Jesus.  Telling the people that God had a plan to establish a kingdom.  He even told people to pray, "Thy kingdom come, thy will be done....for thine is the kingdom, the power, and the glory for ever..."

Jesus proclaimed the very kingdom which the Jews had recorded in their history:  1 Chronicles 29:11 "Thine, O Lord is the greatness, and the power, and the glory, and the victory, and the majesty: for all that is in the heaven and in the earth is thine; thine is the kingdom, O Lord, (Jesus) and you are exalted as head above all."  I doubt if the Romans had read that.

Now we, you and I who profess Christ as the Messiah, are citizens of that kingdom.  The Bible calls us heirs--joint heirs with Christ.  I'm sure you've heard the old song that says: "This world is not my home, I'm just a'passin through.  My treasures are laid up, somewhere beyond the blue.  The angels beckon me, through heaven's open door.  And I can't feel at home in this world anymore."

We are aliens in a world that increasingly hates authority.  We, on the other hand, are striving to come under the Kingship of a righteous God.  We are trying to keep his laws and practice love for God and others.  As a result, we come under condemnation from those who don't believe in God, much less agree that he has the authority to set boundaries on our behavior.