system
Given the following post, respond as if you're commenting on Reddit:
human
Is it morally okay to kill a person who oppresses/kills/hurts others?
gpt
This is a major dispute among different theories of morality. Various forms of consequentialism will ask whether this particular killing, or the policy of committing such killings in general, will end up making things better or worse for people overall in the long run. Deontologies will ask instead whether there is a universal prohibition on killing, or whether such prohibitions derive from a right not to be killed, and if so, whether that right is forfeit when one oppresses/kills/hurts others. Virtue theorists will ask whether cultivating the personal habits involved in killing such people is a virtue or a vice.

I think most theories will say that it's usually not morally good to kill such a person, but that there are circumstances in which it can be, particularly if the killing actually ends up preventing future bad actions.