I have a fire extinguisher because it takes a few minutes for the Fire Department to arrive, and seconds count.
I know CPR, First Aid, how to use an AED because it takes a few minutes for EMS to arrive, and seconds count.
I have guns because it takes the Police Department a few minutes to arrive, and seconds count.
Historically, societies which have seen the rise of dictatorship have been the ones where their right to own and carry arms was curtailed.
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A few quotes on the subject that I like:
*“Among the many misdeeds of the British rule in India, history will look upon the act of depriving a whole nation of arms as the blackest.” Gandhi
“This year will go down in history! For the first time, a civilized nation has full gun registration! Our streets will be safer, our police more efficient, and the world will follow our lead into the future!” Adolf Hitler, 1935
“What country can preserve its liberties if their rulers are not warned from time to time that their people preserve the spirit of resistance?” Thomas Jefferson
“Democracy: is two Wolves and a Lamb discussing Whats for Dinner. Liberty: is a well Armed Lamb willing to Contest The Majority Decision.” Benjamin Franklin 1755
“The Constitution is not an instrument for the government to restrain the people; it is an instrument for the people to restrain the government, lest it come to dominate our lives and interests.” Patrick Henry*