I asked a lefty friend with a 20-something daughter this question once. He literally believed that guns were so difficult to use and scary that she would just hurt herself, or have it used against her in a situation like this. Head-->desk.
Just keep asking them the same question and demanding an answer. That upsets a lot of people, which is good. Because then the question will stick with them.
'So difficult to use, over 400 million guns are in this country, almost all owned by non-gangbangers'
'I will pay for a gun safety class and marksmanship training, your daughter deserves a chance to protect herself against a bigger, stronger man that wants to rape or murder her'
ESCALATION:
'It's almost like you want a nigger to rape and kill your daughter'
(post is archived)