What do Buddhists think of the premise that power is a necessary good and a necessary evil?

I have been through 34 years of life and am beginning to understand some things I couldn’t before. Not everyone is good and not everyone is bad, at least some of the time. Time is a tourniquet for scars but what heals the injury? Is power good, bad or necessary for both? If you feel lost, you can just answer the title question, no problem.