https://techcrunch.com/2020/08/23/twitter-hides-trump-tweet-behind-notice-for-potentially-dissuading-people-from-voting/

Twitter flagged one of President Donald Trump’s tweets on Monday, placing it behind a notice that warns users it violates the platform’s rules against dissuading people from voting.

In the tweet, posted on Monday, Trump claimed mail drop boxes are a “voter security disaster” and also said they are “not COVID sanitized.” Twitter’s notice says that the tweet violates its rules about civic and election integrity, but it “determined it may be in the public’s interest for the Tweet to remain accessible.” Users can still retweet it with comment, but are nor prevented from liking, replying, or retweeting it alone.