Apologies I usually go further in my explanation of people having no rights.
when I say you have no rights I mean none of those pretty little social rights like freedom, liberty, happiness, freedom of religion all those are privileges of society the only fundamental rights you have are those you can hold. Nature doesn't give a crap about your right to life or private property. the tiger cares that he is hungry.
The only rights you have are those you can hold. Can you defend your life? can you protect your freedom? can you hold your property against threat.
As for not being responsible for killing a man under duress pretty much all reasonable people would absolve you of guilt but being free of guilt this does not mean you don't bear the responsibility of your choice.
As for signs on your private property claiming total ownership off you land this seams at odds with your redistribution of the land. If Australia went anarchist tomorrow as wished to redistribute your land and resources would you take those signs down?