Why was Paul Buchheit's article criticising Ayn Rand taken down?

It was off-topic, generating uncivil discussion, and the title was misleading people about who wrote it -- not YC's Paul.

BTW It's not <i>that</i> Paul Buchheit.<p>It's this guy: <a href="http://www.commondreams.org/paul-buchheit" rel="nofollow">http://www.commondreams.org/paul-buchheit</a>