Story highlights Moira Whelan: It was my job at the State Department to understand America's role in the global social media landscape. Extremists everywhere are learning a lot about what they can do in their own countries from this election, writes Whelan. But the fact is that when it comes to what extremists do online, Trump knows exactly what he's doing, and around the world he is a model. Until this summer, it was my job at the State Department to understand the global social media landscape so we can make sure America's message resonated. But as extremists moved into the global discourse online, the challenge increased.

Source: CNN October 07, 2016 19:42 UTC