Back in September, the network banned a post containing the Pulitzer Prize-winning "The Terror of War" photograph (better known as 'napalm girl') for indecency and suspended the journalist who posted it before reversing both actions after heavy complaint. That same month, anti-Dakota Access Pipeline protesters claim Facebook censored their video stream, though the social network claims its automatic spam filter blocked the live feed site in error. Then Palestinian journalists were briefly locked out of their own accounts, which Facebook again cited as an innocent mistake.

Once again, the social network chalked Sessums' ban up to internal error.

"We're very sorry about this mistake," a Facebook spokesman told The Guardian. "The post was removed in error and restored as soon as we were able to investigate. Our team processes millions of reports each week, and we sometimes get things wrong."

In each apology, Facebook cites the sheer volume of algorithm and community-reported posts. But less understandable is the arbitrary ruling of what violates the network's community standards. During the presidential campaign, the social network's employees argued to ban Trump's posts for hate speech against CEO Mark Zuckerberg's command, who ruled it would be inappropriate to censor a candidate. Even if Sessums' post was blocked in error, it's worrying that it took a major newspaper's inquiry to reinstate his speech and access, especially when he was critiquing the followers of a man whose posts evidently don't run afoul of the network's community standards.