With that being said, I think when it comes to national defense, community defense, state defense anything goes. It's always better to hunt, then to wait. It is better to hunt then go after something after it happens.
So am I against camera's everywhere? No, not really. There is obviously good that can come out of that. I am though against camera's being used to prosecute you if might be doing something like not turning with your blinkers on. I am against cameras being used to ticket speeders. I am against cameras being used on your own private property. Yes, the whole civil liberties argument, I side on the side of liberty. However, and this is not an exception, I believe defense of liberty is key.
If you are to have a country, a state, a city, it is ok to pay for the defense of those liberties. Evil exists, and having cameras can squelch that to some degree. It doesn't eradicate it. It helps it. So if money used for stupid social programs could be used for defense, then the world, at least the rational world would be a little more safer. Would you pay for safety?
As a minarchist, that's what I would pay for. DEFENSE.