Because you are the other.
The ubiquitous enemy that must be destroyed at all costs.
Your humanity can never be acknowledged.
Plus, there's nothing good on TV right now. And a duper analysis:
Wow, such hate
This is scary. And to think that my town is full of such people?
These people have no sense of humor. I thought your response was hilarious. They take it as a death threat.
It's not my fault there's nothing good on TV. :)