Liberty is limited by law in free societies, as law defines and determines what is illegal or criminal behavior. But, what "Should" be limited?
Government should be limited according to our Founding Fathers. Governments intrude upon individual liberties. Therefore, governments should limit by law, what should be protected. Government should protect indivdiual values to life, liberty and the pursuit of happiness. Life is to be protected. Property is to be protected. And privacy is to be protected. Whenever these protections are ignored or devalued, then we devalue individuality.
Murder, theft, and privacy are crimes against individuality. The individual has a right to own his own life in Western society. And this is why so many seek to come to our shores. We value opportunity for the individual.