Sorry to have to disagree, but Ben did not do such a good job here. For starters, he fell into letting Piers call AR-15s, the kind we can buy, "assault weapons," and even used the term himself. Thanks, Ben.
Ben did accurately state the real purpose of 2A, but he came across as the nutty one, IMHO. Piers Morgan is a pro at this, and anyone sitting down with him or others like him to talk about gun control has to be able to articulate that the antis' plans to install gun control measures will not prevent a single mass shooting. I realize that Ben was there because of the recent release of his book and that its topic was supposed to be the basis for the discussion.
But let's be realistic here. Anyone going up against a well-rehearsed and well-schooled anti such as PM needs to point out the true underlying causes of these recent mass shootings. In most cases, mass shooters grew up over medicated for supposed behavioral conditions (aka lack of parental discipline) and are now permanently unable to discern right from wrong because of those medications. They gain access to guns either by illegal acts or by slipping through the system even though they are known to have mental conditions which should disqualify them from gun ownership. They select mythical gun-free zones to carry out their illegal acts, and they typically give up as soon as they are confronted by someone with a gun.
Therefore, the best way to prevent such attacks is first to ensure that the environment in which these mass shooters feel free to act is modified. In short, we must clearly and rationally articulate that make-believe gun-free zones are the thing that facilitate and even encourage most mass shootings, and that the legality or availability of any particular kind of gun are irrelevant.
Next, we must re-examine the entire idea that whenever we see a behavioral challenge in a child we must create a medical diagnosis that absolves parents of any responsibility to parent that child beyond making sure that he or she takes that pill. Further, we must close the gaps in mental health reporting and modify the way we view mental illness--in short, we must reconsider the politically correct but mistaken notion that institutionalization is nearly always a bad thing.
Then, we must point out that the need for AR-15s and 30-round mags lies imbedded in the original and current purpose of 2A -- to ensure that the people of this nation maintain the ability to stand up to tyranny in the same way that the revolutionists did in 1776. Then, of course, we must point out that "need" has no bearing on 2A rights, and if it did then by extension it would also have a bearing on 1A rights; therefore, PM must now justify why he needs to have his show.
Ben failed to point out most of this; he stumbled badly in his articulation of 2A's purpose, allowing himself to look like a conspiracy theory whacko instead of pointing out rationally how such tyranny is already happening. Just because he's on the side of 2A doesn't mean we have to say he was awesome. He wasn't.