It's an aspect of the show that has bubbled under the surface for some time, but in recent times, the whole notion of killing another human has come under question. Most action shows contain characters who will happily kill without thinking twice, but The Walking Dead is asking questions of its audience. Which side do you fall on? The theme ensures that the show doesn't fall into the typical slasher category. Yes, people die. Yes, there's blood everywhere. Yes, there are some glamourised gory shots. Still, The Walking Dead is more than just a few cheap kills and the idea of morality is important to maintain that.