There's less people getting killed by extremists than people dying from tangling in their bed sheets (or something similar).
Not only is it a a bad trade. Camera's and surveillance don't stop well planned terrorists attacks. At a certain 'level' of terrorism, or any combative action in enemy territory, you operate under the assumption that you'll get caught and/or killed.
If you truly cared about the loss of life you'd be campaigning against the current speedlimit for cars, and the fact that there's no mandatory alcohol locks for starting your car.
You can walk 24/7 in any city in China without worrying your safety.
Tell me you dare to walk midnight in downtown New York or LA or Chicago.
See how this game works once we start depending on emotional appeals?
I am not suggesting dictatorship is good; but in certain level of civilization, it might be better for the majority.
How about you?
It is inevitable; before 911 there was almost no security check in airports. Boarding was not too much difference than shopping in Walmart.
This is one kind of insurance: most time accident is not happening, but when it happens it can be deadly.
Life consists of compromises. Some are unavoidable.