The tool Facebook built has a worldwide effect, and we knew it because just 2 years ago the Vietnamese government banned a common hashtag (saltbae or something

The tool Facebook built has a worldwide effect, and we knew it because just 2 years ago the Vietnamese government banned a common hashtag (saltbae or something related), and it had a FB-wide effect on all countries. I find it hard to believe that Vietnam is the only one with access to it.