and the "Give to Caesar what is Caesar's" quote... ehhh, i really don't have a problem with that... AT ALL.. i mean its biblical.. but more important things like marriage, and abortion, and homosexuality.. wouldn't Jesus want us to influence government on these issues?
"shaming and exposing the evil of oppression"
Our preacher just gave a sermon on the role of faith in government. The scriptures talked about the "render onto Ceaser..." thing. He noted that Jesus was talking to Jewish leaders in the Temple. He told them to pull out a coin. Having a Roman coin in the temple was sacrilige - an image of a person with words proclaiming him (Cesear) to be king. In fact, the Romans let the Jews mint their own coins that they could use in the temple for offerings, buying sacrficial animals, etc..
So - Jesus was really showing the Jewish leaders to be a sham and exposing theri evil oppresion.