Is TikTok’s time up? The popular video platform finds itself at the center of yet another whirlwind of controversy.

Two of America’s Big Tech companies are opening the door to more “free expression,” even if it means more hateful content. But in Europe, Big Tech companies are voluntarily cracking down.

Last week, the Supreme Court unanimously affirmed the constitutionality of a federal law that bans the distribution of TikTok in the United States unless and until it is sold to a new owner. The Court ...