For example, WhatsApp restricted the number of times a user could forward something, and developed automated systems that detect and flag objectionable content. Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. The Dow Jones Industrial Average fell 230 points, or 0.7%. Meanwhile, the S&P 500 and the Nasdaq Composite dropped 1.3% and 2.2%, respectively. All three indexes began the day with gains before selling off. Russian President Vladimir Putin launched Russia's invasion of Ukraine in the early-morning hours of February 24, targeting several key cities with military strikes. The Russian invasion of Ukraine has been a driving force in markets for the past few weeks.
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