I often hear the argument that states citizens don't need to carry guns or even have them in the home for self-defense purposes, as that's what police are here for. If someone is trying to break into your home, you should just call the police, announce to the bad guy that the authorities will arrive shortly, and then hope the criminals don't slit your throat in the meantime.
Well, consider this.
You're a stay at home mother with two small children in the house. You're husband is on a business trip for the next three days. You've decided to make fried chicken for dinner. You clean the chicken, dredge it, and preheat the oil.
Then something unthinkable happens: the oil bursts into flames.
A giant oil fire is now raging in your kitchen, spreading quite quickly. You make sure your children in the other room are where you can see them, go to grab the fire extinguisher out of the pantry, and you're stunned to find that the extinguisher is gone.
Then you remember. The Washington bureaucrats outlawed using fire extinguishers inside the home a little over a year ago. Their rationale was that fighting fires is what fire departments are for. Vigilante citizens armed with fire extinguishers obviously cannot be trusted to take on the flame alone, so they should be forced to call the fire department when a fire breaks out. The government must take away their only line of defense against fires for their own good.
So, you've got a raging fire (the threat) that could be extinguished by a fire extinguisher (the tool to neutralize the threat), but since you, the lowly citizen, can't be trusted with the tool because the government says so, you are forced to grab your children, hope that your phone is charged, run outside to find shelter, all the while a raging fire is consuming everything you have.
Make sense now?