I'm assuming you're referring to the US, in which case it's worth bearing in mind that your nation's violence rates are often well outside the norm amongst developed nations. I can assure you the only relationship I (or friends & family) have ever had with murder is via TV. I did have a friend who had been raped during a home invasion, but that was during a visit to the US.
If I had to install special security equipment and arm myself with a machine for making holes in other people to 'feel safe', I'd rather move somewhere with a more peaceful culture if I had the option.
