IMHO You're devolving into an issues based tit-for-tat here Foxfyre, the fundamental difference between libertarians and modern "liberals" (or any other flavor of pro-statist ideology) is the libertarian belief in the principle of non-aggression and that it applies both to the individual AND the state. The modern "liberal" believes that the morality of the individual is separate from that of the state and thus the state is justified in using aggressive force (violence) to achieve it's goals while the individual is not, the libertarian believes that neither the individual nor the state is justified in initiating force to achieve it's goals. The use of force in the libertarian view is only justified by either party to protect the life, liberty and/or property of the citizenry.
It's really not a very complicated concept at it's core, however it can spawn a beautifully complex range of conclusions regarding any particular public policy question.
Yes, most of these issues are not always strictly black or white but can sometimes include shades of gray that allow principle to override ideology. But the purpose of my post was to make the argument that libertarianism and modern American liberalism have nothing in common. I just used the issues Thanatos threw out there, at my request, to make the point.
I haven't thought of it in terms of aggression and non-aggression though and will think that one through. For me it is live and let live which maybe is the same thing just said differently?
In my view libertarianism is the freedom to do what is right and smart and edifying to me whether others agree or not. But there is no freedom if people are also not free to do what is wrong or stupid or destructive.
What people are allowed to do with impunity is measured by whether contribution or participation is required of others. If what I want to do requires you to contribute or participate in any way, I do not have any right to what I want or need. I do have the right to negotiate with you or form a social contract to accomplish my goal and it is your right to choose how much you wish to participate in that process.
Modern American liberalism would give government the power to determine what is for my own good, to have at least some control over what I should or should not be allowed to do in my own interest, and to confiscate whatever it needs/wants of my space, labor, or property for some fuzzy concept of the 'common good'.
I wasn't attempting to impugn your methodology Foxfyre, just distill the difference down to a point that most reasonable people can understand, without getting lost in the political minutia.
To answer your question regarding the non-aggression principle and "live and let live", in my view they are quite different because the non-aggression principle underlies morality that the vast majority of people already subscribe too and can readily apply to the behavior of the state once they are able to break free of the dual morality of statist apologias. While "live and let live" implies an absence of common morality (relativistic morality) among individuals as well as the state, it simply says "do what you want as long as you leave me out of it" and ignores the moral responsibilities that we have to one another which underpin human society.
Live and let live does not mean that to me. On several different threads now I have argued long and hard for the concept of social contract by which people with mutual goals and a shared morality can work together and create whatever sort of society they wish to have. I believe that was the Founders' intent.
But the freedom to live my life and to share mutual goals, virtues, responsibilities with those of similar priorities and values must of necessity allow others to live a different lifestyle if they so choose. No matter how superior I believe my sense of virtue to be, if I am given power to dictate that to you, there is no freedom for either of us.
The Founders intended for the federal government to secure our rights and then leave us strictly alone to live our lives and form whatever sort of societies we wished to have. They trusted a free people to learn how to get it right. And though we made mistakes and got things wrong that had to be fixed, for the most part we did.
But freedom means that if I and my group want a Mayberry USA, we can have that. And if you and your groups want a Deadwood in its hellfire days, you can have that. That is what I mean by live and let live.