This is actually a really good example for why we don't want to ban weapons: Genocides are often perpetrated by the country the victims actually belong to.

Examples: Germany under Nazism, former Yugoslavia, Rwanda, -I'm fairly sure the list goes on.

I feel totally safe and I'm actually happy knowing that many of my neighbors have weapons. Especially here in Norway were I know there are strict background checks on who gets permits.

(For Americans: What I would do is start cooperating with NRA like Nordic countries has traditionally done with their local equivalents. Work not to prohibit guns but to promote safe storage and safe practices.)

Not really:

* There is always someone with a bigger gun

* There is always someone who wants to steal your gun/ammo

* There is always a bigger gang that wants to steal your gun

If your solution is to join up with others to make your gang the biggest/best armed and enforcing a monopoly on the use of violence, congratulations, you've either reinvented Warlordism, or in the best case, reinvented the idea of a police force, depending on whether or not the head of the gang answers to a civil authority whose legitimacy comes from something other than "might makes right".

All that said, I don't mean that firearms aren't at all useful, just that they aren't more useful than other important tools. You for a group to be able to defend itself you will find that basics like picks, shovels, sledgehammers, crowbars, hammer and nails, axes and hatchets, saws, ladders, wheelbarrows etc. are all at least as useful as a firearm.

Generally speaking, making the other guy waste his ammo can be a winning strategy.