There is no fine line. For the most part Joe is correct.
At first it was a minority of abolitionists who advanced a cause based on a moral judgment. Others saw the value of the moral argument and joined in. Anti Slavery is now the law of the land.

Seceding from Federal law will be judged by the quality and morality of ( in this case ) the Gun Argument. If in the meantime there are those who defy, ignore or attack Federalism, it is a declaration of war against the United States.

Bruce is actually alluding to talk within private militias in the US.
If those gun enthusiast 3% alt Nazis believe they can defeat the Federal Government with terrorism, civil war and murder, indeed many will die but it is 'doubtful' they will win.

If you think that ignoring the law is OK over a gun argument, you are not OK.