Twitter community adds a context note to Joe Biden tweet:  The official Twitter account for the president tweeted, “America is the most multiracial, dynamic nation in the history of the world. All of us need to say as clearly and forcefully as we can: Hate will not prevail. Silence is complicity, and we will not remain silent. Denialism is worse, and we will call it out." Twitter added a label to the post that read "Readers added context they thought people might want to know.” The added context read "USA is not "the most multiracial, dynamic nation in the history of the world". USA ranks 68th in racial diversity based on the HIEF dataset, measuring ethnic fractionalization for 165 countries from 1945 to 2013." Two links were included to support the note. The label is part of Twitter’s Community Notes system. Twitter users are able to sign up as contributors to add context to tweets.