After seeing the extremely large mass of cops and security to take Biden to speak at one business, along with the White House fencing, I think they will make Biden a martyr through violence. Of course the act will be pinned on some right wing white supremacist. The news would have a huge story and electing a dementia patient will never be publicly admitted. Then the round up if gun owners can begin.
Definitely an option. But I think they will want to get rid of both Biden and Harris. Hard to do both simultaneously. And doing it sequentially in exactly the same way would be suspicious. Biden can be pushed out for health reasons. Harris can be removed by different methods. But, in a pinch, I think the people behind the scenes will do absolutely anything. The Second Amendment is the most important part of the entire Constitution. It’s the only reason our current situation isn’t worse than it already is. But when the government really starts rounding up the gun owners, we will know it’s our last chance.