Why isn't this enderman attacking me?
I heard that if you look at an Enderman, it'll attack you. However, whenever I look at one, it just stares back. Where's the danger in them? How can they kill me?
Judging by the terrain and the structures around you, you are in creative mode. You need to be in survival or adventure mode for Endermen to attack you.
Basically, if you put your crosshair on one, it will get upset and teleport around and hit you. It will do this multiple times until you either evade it, kill it or it kills you.