NRA will never allow it, they will pay Congress as much as it takes to ensure it does not happen, but reasonable, 2nd Amendment controls are possible. 

It is obvious we can control gun mass killings by laws that limit access to entertainment / hobby guns to off-site locations like a shooting range or hunting lodge.  ALL other guns must be limited to what is truly necessary to protect us in our homes.

Look at every scenario where a black man had a gun legally who is now dead, e.g., former military man helping in a mall incident, security guard apprehending hostile person, etc..  The law should not have allowed them to have a gun if THE LAW IS AFRAID OF THEM!  The black man with a gun  scares cops so the cops will kill them.

Let's discuss the 2nd Amendment right to have guns.  It is not a lot of words!

 

"Second Amendment

The Second Amendment of the United States Constitution reads: "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."

https://www.law.cornell.edu/wex/second_amendment

"Such language has created considerable debate regarding the Amendment's intended scope. On the one hand, some believe that the Amendment's phrase "the right of the people to keep and bear Arms" creates an individual constitutional right for citizens of the United States. Under this "individual right theory," the United States Constitution restricts legislative bodies from prohibiting firearm possession, or at the very least, the Amendment renders prohibitory and restrictive regulation presumptively unconstitutional. On the other hand, some scholars point to the prefatory language "a well regulated Militia" to argue that the Framers intended only to restrict Congress from legislating away a state's right to self-defense. Scholars have come to call this theory "the collective rights theory." A collective rights theory of the Second Amendment asserts that citizens do not have an individual right to possess guns and that local, state, and federal legislative bodies therefore possess the authority to regulate firearms without implicating a constitutional right."

Two legal theories, the individual right and the collective right.