To stretch that analogy: all is fine, except for "this guy's" neighbors, they are in for a terrible night. And when the crowd at "this guy's party" is heated up

To stretch that analogy: all is fine, except for "this guy's" neighbors, they are in for a terrible night. And when the crowd at "this guy's party" is heated up and collectively starts harrassing people on the street, it gets even worse. My point: Fine indeed, as long as they "stay there". But they won't. This goes for any online community: it has effects outside of that community.