Mark 12:13-17 A question of duty?

Next up is Mark 12:13-17. After being questioned by the delegation over his authority, jesus tells the parable of the talents (12:1-12). Following this the authorities send another delegation to him.

13Later they sent some of the Pharisees and Herodians to Jesus to catch him in his words. 14They came to him and said, "Teacher, we know you are a man of integrity. You aren't swayed by men, because you pay no attention to who they are; but you teach the way of God in accordance with the truth. Is it right to pay taxes to Caesar or not? 15Should we pay or shouldn't we?"
But Jesus knew their hypocrisy. "Why are you trying to trap me?" he asked. "Bring me a denarius and let me look at it." 16They brought the coin, and he asked them, "Whose portrait is this? And whose inscription?"
"Caesar's," they replied. 17Then Jesus said to them, "Give to Caesar what is Caesar's and to God what is God's." And they were amazed at him.

So then... what do you think, what questions do you have, what may this passage be about, tax evasion or something else? What jumps out, come to mind as you read the passage. I'll be back with my thoughts later!