https://www.reuters.com/article/us-twitter-factcheck/with-fact-checks-twitter-takes-on-a-new-kind-of-task-idUSKBN2360U0

In addition to disputing misleading claims made by U.S. President Donald Trump about mail-in ballots this week, Twitter has added fact-checking labels to thousands of other tweets since introducing the alerts earlier this month, mostly on posts about the coronavirus.