For years, giant social networks like Facebook, Twitter and Instagram have operated under two crucial tenets.
The first is that the platforms have the power to decide what content to keep online and what to take down, free from government oversight. The second is that the websites cannot be held legally responsible for most of what their users post online, shielding the companies from lawsuits over libelous speech, extremist content and real-world harm linked to their platforms.
Now the Supreme Court is poised to reconsider those rules, potentially leading to the most significant reset of the doctrines governing online speech since U.S. officials and courts decided to apply few regulations to the web in the 1990s.
