If you mean https://news.ycombinator.com/item?id=28590055, the comment was flagkilled by users.

However, please see https://news.ycombinator.com/item?id=28602116 - I've banned your account because you've been breaking the site rules repeatedly and egregiously. If you don't want to be banned, you're welcome to email us at hn@ycombinator.com and commit to using the site as intended. That means no more flamebait, no more unsubstantive comments, no more snark, and certainly no more personal attacks.

What was censored? The mods here on HN are good people, if you had a comment unfairly removed, I'm sure it was in error rather than malice.