Twitter refuses to take down Trump's tweets, but apparently they did decide (no doubt after receiving sharp criticism) to start labeling some of Trump's tweets with a "fact check" label. On his false tweet about mail-in ballots and fraud, Twitter placed a label that said "Get the facts about mail-in ballots" with links to news articles that refute Trump's claims, and it also says that Trump's tweets "contain potentially misleading information about voting processes and have been labeled to provide additional context around mail-in ballots."
It's not much, but it was way too much for Trump and his minions, who immediately attacked Twitter - on twitter. Twitter "is now interfering in the 2020 presidential election", Trump tweeted.
"They are saying that my statement on mail-in ballots, which will lead to massive corruption and fraud, is incorrect, based on fact-checking by Fake News CNN and the Amazon Washington Post!" I'm sure there will soon be an indignant wave of facebook chain posts from Trumpites about how the Deep State is censoring Dear Leader's heroic attempts to tell the truth about LibDems and their nefarious plans to steal the 2020 election.
Link:
https://www.washingtonpost.com/technology/2020/05/26/trump-twitter-label-fact-check/?fbclid=IwAR2VNiBgUl7OmHof_UsCYIquuhZnHnjiXWx357tX4PS8IQ_J9Mi5YtB3xto