The argument at Skokie hinged on the swastika itself not being "fighting words". That'd indicate to me that these "fighting words" are a pretty relevant concep

The argument at Skokie hinged on the swastika itself not being "fighting words". That'd indicate to me that these "fighting words" are a pretty relevant concept, and that perhaps showing up armed and declaring "people are going to die before we're done" or "we'll kill them if we have to" crosses this line.