Is it possible that Political Power be used in the interest of Liberty?
Yes, sometimes
it just does happen.
Does that imply that on the whole, Political Power is good?
Nope. But before you may reply to this kind of question, you have to be familiar with
economic reasoning, as opposed to accounting fallacies.
Then you will understand that before it may be answered, the question has to be refined:
good as compared to what?