But, there is a relationship between liberty and safety. Bolshevik Russia was a "safe" place. You had KGB agents stopping "hooligans" on the street. Asking them where they were going, what they were doing, etc. At age 9 (and most importantly as an American there) I never felt safer. I remember going out on my own at night frequently once I spoke enough Russian to get by and never feeling afraid as I frequently did in my own neighborhood in Southern California. That was a culture that did "give up essential liberty" and was "safer".
Here, today, I think the best example of the relationship between safety and security is commercial air travel. Commercial air travel gives you the "liberty" to go virtually anywhere. The only way to make it "safe" is to keep the planes on the ground, i.e., sacrifice the liberty of free movement. We have the right to feel secure in our persons. Now, however, we must sacrifice that right, just a little, to get on the airplanes. Have you seen the pictures of people in airport lines with their shoes in their hands? How far off are cavity searches?
The bottom line is that no security system has ever been developed that cannot be circumvented. But one thing remains true: the mere presence of liberty involves some risk. The more liberty you have, the greater the risk you must be willing to assume. Conversely, you can be safe if you lock yourself up in your home, have your food delivered (and tested, of course), but you will lose all your liberty.
For me, I have accepted that in order for me to live freely, I must assume some risk. Specifically, that owing to my nation state's ineptness in matters foreign, there are a lot of people out there who do not like us. But, if I am to remain free, I must also grant them freedom (at least while they're in my country). Failure to do that diminishes everything good about this country.
And, let's get some perspective here: I am far more likely to be killed in an automobile than I am by a terrorist - even if I fly into the busiest airports every day of my life. These assaults on privacy - which is an extension of liberty, are disgusting to me, even if they make me "safer". What good is safety in the absence of freedom?