The world is your mirror. There is no aspect of the world which you see that is not you. That means radical acceptance of all things as non-separate from you.
Good and evil, light and dark: it is all one display. The shows you watch are your own karmas projected on the screen, not different from how you project onto Maya what is inside you. Why does this girl like this show and you don’t? Because the show contains aspects of reality with which she relates. It fits into her worldview and goes toward burning or creating the karmas (which become experiences) she ‘likes’.
Relax, you may not be familiar with some of it because it may go back far—animal births even—not simply those past human births of which we might be less proud or eager to claim. Just watch with attention and discriminate. Consider what you want to perpetuate in your world and what you’d like to be rid of. It’s all you anyway.