Swastikas...Now there's another symbol that's changed throughout history....
I've got one that's a family Heirloom,a necklace belonged to my great grandmother. It's fourteen karat gold, with diamonds on the inside.
Incidentally, no she was not a biggot, racist, Nazi, or any of that drivel. It used to merely be a Roman symbol for good luck, and she'd gotten it when she was a little girl. Incidentally it stays well hidden away and is not worn in public.
Now there's a white axe handle that is a different story altogether, but what can ya' say, good, bad, or indifferent, it's history, and should not be edited for political correctness. (I'm sure there's someone here who remembers those)
Personally I don't find the concept of a KKK case knife to be that offensive, as long as it's not being produced currently. I tend to recall seeing a special on the KKK that said they're down to around 1,500 members, and it's still declining.