I don't wish anyone close interactions with the legal system, but some people crave it more than others. In this case you're basing what you believe our reactions should be, on what the world should be rather than what it is. There are plenty of places in the world where a slung AK doesn't raise so much as an eyebrow. Those happen to be all the places most of us are glad we don't call home. If I can get that then I can get why soccer moms would associate slung rifles with those places.
It really is that simple.
Name a place where good free men, not representatives of the state, carry rifles.
Here, we should carry them as free men.
It really is that simple.