Americans have become sheep to be led to and off the cliff by the pied pipers of disinformation and PR.
The scenario will work like this.
First, the groups of organized opposition such as NRA GOA etc will be hijacked by the M. Bloombergs and big money interests behind gun control. A billion here or there could buy off their BODs. Without any such organization and there is no defense against the wealthy elites who want the sheep disarmed. All it takes is to change or cut of the head of leadership and the mission of such organizations can be molded like putty by $$$$$.
Second, would be a media that uses intentional false flag gun tragedies (purposely set up???) to move public opinion.
Third, before you can snap your fingers the American sheep that are owned by Hollywood and the entertainment media would be clamoring to rescind the 2nd Amendment.
I use the example of the AARP that once served as the most powerful lobbying and advocacy group in the USA, and it served senior citizens. No Congressman would mess with them. Around 2000 there was a leadership coup that took all of the voting power from the state AARP groups and gave the power to the new CEO Novelli. He turned it into a money making machine that primarily used and profited from seniors, instead of a group that only advocated for seniors.
The same thing could easily happen to gun advocacy groups.
The people running the federales now have as part of the agenda they serve the elimination of a significant percentage of the population, to make US more manageable. Starvation and disease will have swarmed the feral raiders, who will have been slaughtered like the rats they are, but who will also have picked up weaponry to use in their continued raids.
It is at that point that the devil's own soldiers against freedom will be welcomed into many neighborhoods, to pacify the scene. Comparing the scenario to a battle, the starvation and disease will be the artillery to soften up the objective.
There will still be many of US old farts who will not capitulate to the federales, and we will have had battle training against the horde, but the onslaught from the savages prior to the federales moving in will have softened up a very large percentage of the once brave patriots who want their family to survive in the face of chaos and disaster.
Personally, I'll fire until ammo is gone or they have a sniper take me out. I'm too old to live the remainder of my life under tyranny and ‘death panels’.