There are forces of evil, all around us in the world. And I don't mean ghosts, or goblins, or anything like that. A force is anything that pushes us, or pulls us, whether we want it to or not. Greed is a force. Wanting to have more stuff, no matter how much we already have, and no matter who gets hurt.
Anger is a force.
Sometimes we can use it positively. But a lot of the time, it destroys things. And forces that destroy lives, forces that destroy relationships, forces that destroy people, are evil. It's important for us to understand those forces, and for us to be on the lookout for them. And we have to realize that we aren't strong enough, all by ourselves, to hold on against some of these forces.