Twitter left hundreds of Russian propaganda videos, with millions of views, on its video platform Vine for months after it should have known they were posted by a Kremlin-linked troll group.
The discovery raises new questions about the nature of the company’s effort to find and remove content produced by Russians trying to meddle in American politics, and how comprehensive it has been.
The accounts and videos were removed only after CNN brought them to Twitter’s attention on Wednesday. Twitter did not comment as to why it removed the accounts or why they had been allowed to remain live for so long.
Sen. Mark Warner, the leading Democrat on the Senate Intelligence Committee, told CNN he was concerned by the findings and Twitter’s response.
“Twitter shouldn’t wait for Congress or anybody else to send a ‘to-do’ list with specific accounts to delete,” Warner said in a statement …
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