The government can engage "unconstitutional behavior", a citizen is simply breaking a law, which is almost always defined and enforced on a state level.
I like how you put it - the Feds are "helping me". Perhaps someday soon they'll help me get rid of all these guns and ammo I have.
Parse, parse, parse.
So if fellow citizens are breaking the law, maybe not letting certain other citizens be free or go about their business, and the local government abdicates its duties to its citizens, do the Feds have no jurisdiction to remedy the situation for the citizens being denied their freedom?