A good thing for gun rights advocates and their opponents to keep in mind is that the Second Amendment is not an authorization, it is not a creation of a right, it is the acknowledgement of an absolute right to defend oneself against criminals either inside or outside of the government.
The shooting event in Las Vegas cannot be absolutely ruled out as a false flag operation and, in fact, several indicators point to just that, so no law would have prevented the government from setting up this fiasco and covering their tracks with the same arrogance they covered up the facts of Waco and Fast and Furious.
There is no dispute that the government was willing to sacrifice the lives of hundreds, perhaps thousands of Mexicans in the Fast and Furious scandal in an attempt to pass an assault weapons ban. Witnessing this abusive policy is the reason ATF agents, appalled at the actions and cynical nature of Fast and Furious risked their lives to expose it. Given that track record, why should anyone consider that the government agencies involved in that would not do the same thing in America when gun rights advocates like Gun Owners of America were starting to chip away at other infringements of the Second Amendment, just to show the power of the deep state? This is the type of government and government officials we are dealing with here.
I can list off all of the Supreme Court decisions that I want and it won't make my argument any more compelling to those who disagree with the Second Amendment, nor will it make supporters any more emboldened by the facts, because this is not a legal question. It is a political question. Does the government have the ability to arrest over 100,000,000 gun owners and seize over 400,000,000 guns?
When the question was one of arresting 12,000,000 illegal immigrants (conservative estimate) the leftist/collectivists said no, not possible, but when that same question is asked of them about 100,000,000 gun owners, the answer is yes. That tells you all you need to know about how ruthless the collectivists are willing to be when it comes to law-abiding American citizens who don't vote for them versus illegal immigrants that do vote for them.
This is exactly what the Second Amendment was all about. It was to protect the people from the government and other people who would exact their vengeance against them. This is why we are not a democracy under which the majority could decide that certain rights for certain people didn't apply and would use the power of the government to oppress them. So, when it comes down to the question of whether or not to abolish the Second Amendment the real, underlying question is: Will the government cease to be a republic? The United States cannot be both a republic defending individual rights and simultaneously a democracy open to mob rule. It is one or the other and it is perhaps the gun issue that reveals the change in status from a republic to a communist state over the past two hundred years and alerts patriots to their duty to defend the republic or abolish the flawed, corrupted remnants of it.