Best weapon for any situation is a brain. If you ain't got one of those, get a gun, put it in your mouth and pull the trigger...you'll not have to worry about your own safety anymore and you'll make the world safer for the rest of us.
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"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey