It is hard to get out of a dark place once you are in it. But regardless of what the world is like and what you are going to it is possible to shed some light in an empty abyss. It all revolves around yourself and your own perceptions. Let the world be the world, and worry about the things you CAN control (yourself). There are indeed people who abuse power and corruption everywhere in the world.

What helps me when im in a dark place is remembering ghandi.

These thoughts dont go away over night. They never will

Also, all because someone seems pleasant and pleased about society, doesnt mean they always were, or are.