In Chile, nearly 10 percent of all tweets supporting protests in late October originated with Twitter accounts that had a high certainty of being linked to Russia.In Bolivia, immediately after President Evo Morales resigned on Nov. 10, the number of tweets associated with those type of accounts spiked to more than 1,000 a day, up from fewer than five.And in Ecuador, Peru, Bolivia, Colombia and Chile over one 30-day period, Russia-linked accounts posted strikingly similar messages within 90 minutes of one another.