<p>
</p>
<p>However, the law has to draw the line somewhere between lawful self defense and vigilante retaliation. Different states have drawn the line in different places, although this particular incident probably crosses at least into a gray area in even the states with more lenient laws on lawful self defense. (And that does not really have to do with whether any guns are involved – if a weapon other than a gun were used, this particular legal issue would be the same.)</p>