I would say upside down USA flag for dramatic effect.
Searching... http://www.viewpure.com/d6uujf0csGA?start=0&end=0
Okay, let's try this... https://www.blackflag.com
Better... https://www.blackflagbrewingco.com
Oh, this is the stuff: “Black flags have historically been used to signify that no quarter will be given. When translated into modern language, this means that captured enemy combatants will be killed rather than taken prisoner.”
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