I'd stay anonymous, too.  For safety, I keep a small canister of pepper spray/tear gas in a hidden but easily accessible area of every room in my house.  That way, if anything happens, no matter where I am, one will be handy.  I can get to them in less than a second.  Pepper spray in these small canisters is legal in my country and provides a non-lethal way to incapacitate an aggressive attacker and get to safety.  I haven't needed to use one yet, but I'm glad they are available.  Readily accessible pepper spray is not an option for people with children.