system
A chat on subreddit /r/PoliticalCompassMemes
human
Or they live in either San Francisco or Portland and are sick and tired of living on top of a sea of homeless people. 

Instead taking a logical approach to the problem (stop voting for liberal politicians who enable this problem), liblefts decide to take matters into their own hands and go on homeless murders sprees.
gpt
This is, of course, a very libertarian position to take.