Living With Zombies

I didn't know what was happening until I was face to face with what I knew wasn't human. Many people tried before me to kill it but they ended up dead instead, but not for long. Usually the un-human thing attacked the human and then the human died, but then after a few minutes the dead human got back up and repeated the process with someone else. I didn't know at first what was happening but then I started to see the signs.
1. Those things attacked alive people and turned them into dead people by eating them.
2. The person who dies usually gets back up and starts doing what the thing did to them to someone else.
3. The things didn't die unless you smashed their head in.

I knew what this was. It was the stuff in the movies. The things people didn't believe would actually happen, ever. But it did, and I saw it. This world isn't the one it use to be anymore. It now belongs to zombies.