@sardonicsmile @djsumdog Though my real answer would be "whenever I feel like it is", I can also make an ethical case for it where it can serve to improve the world if the target is a pedo, huckster or health insurance fraud etc.
This is both from removing them from society, and disincentivising likeminded people from doing the same.
I'm not defending health insurance. I know peoples' premiums paid my rent and food for the two and a half years I was writing software in that industry. But at the same time, it's just one dude, playing within the rules of the system. Someone shoots and murders Musk and I guarantee half the people praising this guy's death would be scream and mourning about their lord and savior Elon.
Murder is wrong. It doesn't matter who you are. Praising this shit is as retarded as praising "Uncle Ted" or that batshit insane Killdozer guy (who almost murdered a room full of primary school children if it wasn't for the police in that town).