I understand that just a few weeks ago after the previous shooting involving a trans shooter, there was talk about whether or not to ban trans people from having guns. The NRA put out a statement saying they supported 2A rights for all law-abiding Americans or words to that effect.
I didn't really follow this but I saw mention of it when I was browsing the transguns sub the other day.
I'm not au fait with gun rights laws to know how they treat either terrorist groups or people with mental illnesses, as I imagine those are the angles you would try to go for if you wanted a ban for groups like Armed Queers etc.
I think this is an example (somewhat less relevant to the UK ofc) of why it is important to engage with the question of "just how violent are these groups" because stripping civil liberties (which this is in the US) of a non-violent group is pretty harsh, but if there are patterns that would allow you to identify the real crazies within that group, presumably there would be some kind of "terrorist/gang" exceptions that would apply. But if you don't allow discussion of it you can't engage with that.
Of course it's the US so anyone can get a gun who wants one regardless