There are some data sets but Hacker News has a non rate-limited API (see the bottom of the page) so you can just build one yourself. I don't think you can get

There are some data sets but Hacker News has a non rate-limited API (see the bottom of the page) so you can just build one yourself. I don't think you can get the content of flagged posts without actually scraping the site but that'll get you banned.