Although some channels have been removed, the curation process is considered opaque and insufficient by analysts. Such instructions could actually endanger people — citizens receive air strike warnings via smartphone alerts. Some privacy experts say Telegram is not secure enough 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. Anastasia Vlasova/Getty Images
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