Disclosure: I got my legal degree in forestry school. (And this post is intended for all, not in response to any particular poster.)
However, it's opinion more than established fact whether SCOTUS has misinterpreted 2A, as I've read (in the past) legal opinions on both sides, written by people with real legal credentials. One facet of 2A is the phrase "...the right of the people...", wording found in only 3 of the first 10 amendments, 1, 2 and 4. The militia interpretation would have 2A relevant to only a portion of the people while 1 and 4 obviously apply to all. Also, the BOR was enacted not all that long after the minutemen gathered at Lexington and Concord, and IMO the concept of "militia" was a lot closer back then to "minuteman" than to current practice such as the National Guard.
That said, gun violence is getting worse and worse, in part because people are getting more and more polarized both politically and socially, and available firearms are more powerful (though Dan'l Boone's Kentucky rifle could take down deer at long range - one at a time.)
My earlier post mentioned Prohibition, which I likely would've supported, having seen alcoholism ravage loved ones. However, that act failed for a number of reasons. Among them:
--A large segment of the population didn't agree and were willing to flout the law, which led to a black market that included organized crime.
--Alcohol was easily acquired (or made) such that its exclusion was essentially impossible.
IMO, attempts to stringently limit private ownership of firearms would have unintended consequences that might be worse than those during prohibition. Easy to state a problem, much more difficult to fix it.