Some people are so fully open to the true nature of existence that they are peaceful no matter what the circumstances. For the enlightened mind, peace does not depend on any object or concept. Awareness of the absolute nature of things, the universal truth, is not limited or conditioned by concepts, feelings, or labels such as good and bad. A mind that is free can transcend dualistic categories such as peace versus conflict and joy versus suffering. The enlightened mind does not discriminate between a subjective or an objective reality or between liking and disliking.
Time is timeless, and everything in existence is perfect as it is.
Before this begins to sound too theoretical, I should say that there are many people who are enlightened, to one degree or another. Some Tibetan lamas I know were imprisoned for many years, and they almost enjoyed the experience. I try to avoid talking about the political upheaval in Tibet, because it is too easy for blame to arise. This can lead to a cycle of resentment, which could embitter the mind and is neither helpful nor productive. Suffice it to say that prison is not necessarily a pleasant holiday.