This also assumes that the claimant is even under US jurisdiction. Let's say you are affiliated with the <insert dictatorship here> government and want to cen

This also assumes that the claimant is even under US jurisdiction. Let's say you are affiliated with the <insert dictatorship here> government and want to censor memes critical of <insert dictator>. You can pretend you're John Appleseed, living at 123 Church Street in Maine, and that the memes are copies of your own work, posted without attribution. If anybody dares to file a counterclaim, they have to provide all their personal details. If they post <insert dictator here> memes, it's likely they have some connection to your country, either by straight up living there or having family members. You can exploit those connections and do whatever dictators like to do with people who like to post memes critical of them. If you find an actual American with no connection to your country who isn't afraid to disclose their personal details to you, they can sue. They can probably even win, possibly in a default judgment, as you're not from the US and therefore unlikely to show up in an American court. That, however, doesn't matter much, as there's no way the US can do anything to you. Even if they figure out who you are, they can't forcibly take money out of a bank account in <insert dictatorship here>.