Considering you wouldn't require a background check unless you were acquiring a gun, it's pretty safe to assume you and your address is flagged as owning or likely possessing a firearm. There's no such thing as anonymity when you've given government agents your name and address so they can check your background.
It's a pretty safe bet that there is not a database of "gun owners" in most states, as it would be over 50% of the homes, and damned near everyone in some state, like Texas.
Even the neighbour who's psychotic? I'd be concerned about them. A psychotic nutter with an AR15 who's had no background checks on his stability is far more of a danger to me than my friendly law obiding [sic] neighbour with knives in his kitchen.
Yep, even nut job. Not worried. You should be more worried about the neighbors kid three streets over that gets involved in drugs, and has gotten a slap on the wrist three times and let go. Then he goes bonkers and decides you have cash and comes to get it at 3:00 am. It hasn't happened in your neighborhood...yet. It could. See, I plan for such contingencies. You don't. That is why I'm not worried and sleep just fine.
I'm all for the freedom of owning a gun.
Let me rephrase that for you, including what you left out:
I'm all for limited gun ownership, as approved by my over lords, and with guns registered with them, so they may come and take them on a whim.
See, the government, every government, can't be trusted. Not yours, not mine, none. You trust them I don't.
However, your point my neighbour owns knives is irrelevent in a country where crime is very low amongst non criminals. A lot of the crime you hear about with knives is gang on gang crime, not innocent people. Even then, when it's robberies, more often than not it's London which is a cest pit of crime and gangs on some estates. The rest of the country has very low rates of armed crime against innocent people. There's more chance of being struck by lightening or winning the lottery over here than being shot or stabbed if you're not a criminal outside of London. Even in London, the majority will never have been threatened or know anyone who has.
In over 50 years of living where I do, the worst crime in my neighbourhood is someone wrote a single graffiti tag on a nearby wall, and that's happened once in 50 yrs. Every other wall is clean and always has been. There has been the odd burglary nearby, but never an attempt on mine nor a home invasion which practically doesn't exist. The closest crime we have to home invasion is burglary and our burglars aren't usually armed, avoid houses when people are in them and if caught will flee rather than confront.
Our Police respond with firearms quickly when needed as seen in the earlier videos posted above as we have armed areas cars on the road 24/7. However, with home invasion practically non existent in the UK, and violent crime almost unheard of outside some dodgy inner city estates predominately in London, we have very little to fear about a lack of means of self defence.
Yeah, about crime by non-criminals...kind of an oxymoron, isn't it? Everyone is a non-criminal at some point in their life. Armed police are in every city and town in the US 24 hours per day. My town, of 5,000 people, has at least two officers on duty at night. Armed with handguns and shot guns. They may also have AR-15s. Can't tell you the last time they used them. But, they take minutes, at least, to arrive. It takes seconds to slice your throat, or smash your brains out with a hammer. You take your approach, I'll take mine.
We can agree to disagree, as long as you keep your ideas on your side, and don't try and come to my side when the crime rates rise, and bring your failed ideas to mine. Kind of like my neighbors who left New York due to uncontrolled crime. Damned LGB supporters...