The first episode is from a delusional girl's perspective where she is living at school and attending her club and classes. It slowly unfolds around her that she is in the middle of a zombie apocolypse. Honestly I hate the character and think she should be killed off but the twist and preceding episodes getting darker and darker is a unique twist on a beaten to death genre.
We have multitudes of real world example of genocide. I'd like to genocide niggers without destroying Africa. So no nuking. Mud huts to mud huts extermination? Gassing that effects humans specifically?