South Korean police raided the headquarters of Starbucks’ local operation as part of an investigation into a controversial marketing campaign that was perceived as defaming 1980s' pro-democracy movements.Investigators searched the Starbucks headquarters in southern Seoul on Tuesday, police said Wednesday.Police gave no further details, but South Korean media reported investigators also were sent to the residences of Starbucks executives.The coffee chain triggered a public uproar when it attempted to promote a series of stainless-steel tumblers it called “SS Tank” by declaring May 18 to…READ FULL ARTICLE