Spend the money you would spend on buying the gun, training to use it, practice shells over time, refresher training, the cost of a 20M umbrella policy - oops, my bad, was that just a land shark with a candygram?, and move to a better neighborhood....
How many of the type of 'event,' that you are worried about were reported in the greater Bay Area in 2009? Are there even enough to need to take off your shoes to count that high?
I am a gun owner. I am not for banning the private ownership of guns, however, I do believe that gun, boat, and motorcycle ownership should have a little more involved training as barriers to entry, rather than 'Yes we do take Visa.'
All the gun talk here makes me consider that the sprotbile crowd is A.) Very young, and wants all the forbidden toys from childhood B.) Paranoid as fuck C.) On to some undercurrent socio-poli-twinkie-anarchy vibe, that this old fart isn't feeling D.) Has way too much cash or credit, and isn't thinking about retirement E.) Gets a way different newspaper/set of tv stations than I do
You'll shoot your eye out.