I have a computer on my desk. It's can check E-Mail, play games, and assist me with writing annoying messages on I-Hub.
I have a computer in my car. It can regulate fuel delivery, ignition timing, etc.
Because each is wired differently, they cannot perform one other's duties. Sure, they can in theory, but in practice, they cannot.
People are like that. We're locked into seeing the world filtered by our brain's wiring. In most cases, it's impossible to change. And we're all convinced that our way of interpreting things is correct; hence, opinions differing from ours must be wrong.
On rare occasions, an event rocks our world so much that we can no longer ignore the possibility we may be wrong and we can shed our blinders long enough to examine the evidence with an open mind. But the key word is "Rare" since it happens so seldom. But this doesn't deter people on both sides of the question from hoping to "enlighten" the other. And it's this hope that perpetuates the arguments.
So the short answer to your question, "Why do anti-gun people ignore facts?" is because they CANNOT do otherwise.
Cheers, PW.
P.S. An example: we had a Liberal Member of Parliament who was a strong supporter of the "Hug a Criminal" approach favoured by our Justice system. After his niece was raped, his views changed.
