Bad Karma?
Pffffffttt. Not only would I buy it, I have bought one. A great shooter, the only drawback is the pitting left on the end of the slide from the bodily fluids that were allowed to sit on it for a few years without being cleaned off while the gun was sitting minding its own business in the police evidence room.
Personally, I rarely think about the guns history nor is it a subject I routinely bring up but it's not a secret either. I use the gun in competition and lots of fellow shooters are aware of it's past, doesn't seem to bother anyone.
I guess if you had named all of your guns, (or other objects for that matter) it may be kinda hard to come up with a suitable moniker for that one..