What is the difference between a FReeper advocating the killing of a 'looter'
( other wise known as an out law, threatening honest people's lives by walking around with IE; a machine gun, and shooting anything that gets in the way of his goal ),
and a FReeper advocating the killing of a 'Muslim extremest terrorist murderer',
( Other wise known as a jihadist, with the characteristics of outlaws - see above )
If that 'looter' threatens you with his 'machine gun' then he is no longer just a looter. At that point you have ever right to defend yourself.