It would be a pretty basic routine to ha keep respond to, and I investigate all reported gunshot incidents. Someone hears gunshots in the distance..? Leo converges on said area, and investgates... Before too awful long most folks won't even want to dust off their guns, and practice using them.
Oh, is that what you think, doofus?
First off, what makes you think police officers want to die for your war against the United States Constitution? Secondly, what makes you think they would win, even if they were so stupid as to try? Take a typical block in the suburbs of Dallas, even if the cops were so stupid to start kicking in doors, they would have the entire block to deal with, not just one victim.
But, you fuckers want a civil war, you need to fight it yourselves, don't depend on cops to die for your war against freedom.