Government has no other end, but to the preservation of Property - John Locke
Liberty is a concept that is difficult to understand for many people. No one is free to do as they please...without facing some consequence for their actions. Most humans understand this to be true. For instance, murder and theft are wrong. Regardless of your religious, or lack of religious convictions, stealing and killing another human being is wrong.
Everyone is born with the right to be responsible for themselves. To make their own way in this world...unhindered by the views of others. Of course, this does not mean we have a right to infringe on the rights of others. In a peaceful society there must be rules by which we live our lives, and though the majority of us understand that, there must be enforceable rules that establish standards, and penalties for those who step on the rights of another. Even the most primitive of societies understood this concept.