Earlier quoted context omitted.
HN has a problem with the libertarian hellscape ideology of laws being an impediment to wealth. I would argue this oppressive ideology is far more violent than the dross that's skimmed off Reddit. Additionally, HN is far, far less intelligent than its users would have you believe, but that circles back to the edgelord libertarianism again.
Ok so I get that you disagree but how is it violence?
Usually, this is taken care of through the courts, wherein the judicial system punishes people for crimes -- again, an act of violence. However, in the absence of punishment or a judiciary aligned with the interests of oppressors, the oppressed are morally justified in enacting punishment and responding to violence in kind.
[1] Paulo Freire, Pedagogy of the Oppressed, 1967.