Yeah that was crazy and so blatant, it really allows you to see how pervasive this is when its somewhere you'd think of civil like HN.

We've banned that account. But since you've added a comment about HN, I want to say: it's unrealistic to expect such comments not to appear on any large, open internet forum. As anyone can create an account and post anything, anything that exists in society is going to show up here. All we can do is react once it does.