LOL! I also live in a US tech area on the East coast (I assume you are West). People don't even lock their doors at night. Some even leave their garages open with thousand of dollars of various power tools and stuff exposed. Kids leave their bikes out in front of the house all night. There's $1000 outdoor grills within sight of the street from unfenced backyards. If people can't fit various stuff in their garage/basement they keep it in an unlocked shed in the backyard.
If you are in California I suggest you let that wall be built. That way you won't have so many poor people roaming around robbing homes.
Super safe US, I guess some live in denial.
so many bars...