The South Korean CIA (actually the CIA, FBI, NSA rolled into one) was found out doing this, thousands of comments per month, retweets and uncounted amounts of upvotes and downvotes, in favor of the conservative party in an extremely close presidential election last year. The conservative candidate (daughter of the dictator of the 1970s) won. This became known well before the presidential election but investigation was suppressed.
After they were put in hot water, they (yes, the CIA, not the police) arrested a senator for alleged conspiracy to overturn the government, and the chief prosecutor (who was pressing for truth) was accused of having a “illicit love child” to pressure him to step down. This is the same organization that “disappeared” political dissidents during the 60s, 70s and 80s. South Koreans are just beginning to realize just how much this unaccountable cadre still rules the roost in the name of national security.
Elections was hard won by South Koreans in 1987, overthrowing military dictatorship for decades, but all the players are still in power. Democracy seems not only hard to achieve, but harder to hold on to.
