Libertarians supposedly believe government can legitimately defend life and Liberty, but then they fail at square one by not defending the unborn. They are not serious people which is why they should not be taken seriously.
“Libertarians supposedly believe government can legitimately defend life and Liberty”
which is completely at odds with their denial of political boundaries [hard to defend something that doesn’t exist]:
We support the removal of governmental impediments to free trade. Political freedom and escape from tyranny demand that individuals not be unreasonably constrained by government in the crossing of political boundaries. Economic freedom demands the unrestricted movement of human as well as financial capital across national borders.