Wow, I'm impressed.
You shouldn't be. It's a sad fact of life that there are people out there that will do utterly disgusting things...
As an example, a couple of years ago, a man, his wife and daughter were the victims of a home invasion just 25 miles away in a nice quiet township. The wife and small child were killed horribly. He died by having bleach forced down his throat.
Own a gun????? Don't own a gun????
I'd rather not watch my wife and daughter die horribly as I watch helplessly only to be murdered in the worst possible way...
Your mileage may vary.
Do I live in fear? No. Am I prepared? Yes... If you fly/flew aircraft you'll understand the concept...