If somebody asks for your opinion on something political do you answer openly or prefer keeping it to yourself and not risking a debate or fight?

I tend to ask more questions than give blanket / opinion based answers. What have you seen/heard? Why are you asking ... is there something I should be aware of? Open the conversation up to dialogue - in which they have to use their brains to formulate an original thought ... instead of repeated triggered tag lines from XYZ media corp.