There is no alternative for followers of Jesus. “We do not use the weapons of the world.” - Paul
Jesus and the apostles did not do to their enemies what was done to that woman.
Nero should have been done. (And was.)
The Jews challenged the Roman occupation. (The followers of Jesus, following his teaching, stayed out of it.) See the Jewish Wars and the destruction of the Temple.
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Have you read Josephus? He was a General in the Jewish army (District of Galilee) defected to the Roman side, and wrote about it while residing in the comforts of Rome.
In all conditions.