What's significant here is what may be essentially the beginnings of a paradigm shift.
It's very important and hopeful that the notion of fighting back is, perhaps, starting to gain some traction. We've been becoming too inclined to passivity.
The first step is coming to the understanding that there are times and circumstances when the right thing is for the good guy to fight back against the bad guy. That realization needs to begin to take root. From there we can start talking about the right ways, the right tools, when and how.
But first we need to break through that "violence is always bad, even by good guys" conceptual barrier that seems to have become pervasive in our modern, urbanized world.
"It is long been a principle of ours that one is no more armed because he has possession of a firearm than he is a musician because he owns a piano. There is no point in having a gun if you are not capable of using it skillfully." -- Jeff Cooper