There is a setting in your options called "showdead". Is that on or off for you? If it's set to off HN will hide some comments that have been killed by userflags. Thus, you may well have not seen the worst examples.
But this week someone (with more than 10k karma and an account that's over 3000 days old) called for Jews to relocate:
https://news.ycombinator.com/item?id=13056816
> But, yes, to the extent the inchoate Alt Right has a position on it, one of them is that Jews are to be "excluded if not eliminated from society", as in all societies that are not Israel. You've got your own homeland now, which we of the Alt West fully support, relocate yourself there. Specifically "diversity + proximity = war", and we want to avoid "war" such as it is or will be.