The Internet and its persistent, attention-seeking child, Social Media has changed the way we live, think and interact on a daily basis. But as this decade comes to a close, we want to highlight the ways in which people have merged digital technology, social media and ingenuity to fight for change using one of the world's newest and most potent devices—the hashtag.

What used to simply be the "pound sign," the beginning of a tic-tac-toe game or what you'd have to enter when interacting with an automated telephone service, the hashtag has become a vital aspect of the digital sphere operating with both form and function. What began in 2007 as a metadata tag used to categorize and group content on social media, the term 'hashtag' has now grown to refer to memes (#GeraraHere), movements (#AmINext), events (#InsertFriendsWeddingHere) and is often used in everyday conversation ("That situation was hashtag awkward").

The power of the hashtag in the mobility of people and ideas truly came to light during the #ArabSpring, which began one year into the new decade. As Tunisia kicked off a revolution against oppressive regimes that spread throughout North Africa and the Middle East, Twitter, Instagram and Facebook played a crucial role in the development and progress of the movements. The hashtag, however, helped for activists, journalists and supporters of causes. It not only helped to source information quickly, but it also acted as a way to create a motto, a war cry, that could spread farther and faster than protestors own voices and faster than a broadcasted news cycle. As The Guardian wrote in 2016, "At times during 2011, the term Arab Spring became interchangeable with 'Twitter uprising' or 'Facebook revolution,' as global media tried to make sense of what was going on."

From there, the hashtag grew to be omnipresent in modern society. It has given us global news, as well as strong comedic relief and continues to play a crucial role in our lives. As the decade comes to a close, here are some of the most impactful hashtags from Africans and for Africans that used the medium well.