~~As an example, there are subreddits like /r/therewasanattempt or /r/interestingasfuck that ban users that post in /r/judaism or /r/israel (there used to be a subreddit /r/bannedforbeingjewish that tracked this but that was banned by reddit admins). This isn't the First Amendment, since it's just a ban based on identity instead of posting content.
According to the US legal system, discrimination based on religion is wrong. I should be able to fix this by complaining to reddit and creating actual knowledge of discrimination. In practice, because there is no contact mechanism for reddit, it's impossible for me to create actual knowledge.~~
edit: I still believe the above behaviour is morally wrong, but it isn't an accurate example of the actual knowledge standard as others have pointed out. I'm leaving it here for context on the follow-up comments.
The TechDirt article doesn't engage with this. It asserts that:
>> Section 230 now has been used to shield tech from consequences for facilitating deadly drug sales, sexual harassment, illegal arms sales and human trafficking. And in the meantime, the companies grew to be some of the most valuable in the world.
> None of those cases would have succeeded under the First Amendment, again because the companies had no actual knowledge of the underlying issues, and thus could not be held liable.
However, if you try to use Facebook's defamation form[1] and list the United States as an option:
> Facebook is not in a position to adjudicate the truth or falsity of statements made by third parties, and consistent with Section 230(c) of the Communications Decency Act, is not responsible for those statements. As a result, we are not liable to act on the content you want to report. If you believe content on Facebook violates our Community Standards (e.g., bullying, harassment, hate speech), please visit the Help Center to learn more about how to report it to us.