#BringBackOurGirls one year laterSella Oneko04/14/2015April 14, 2015Hashtag campaigns tend to fizzle out after only a few days. But #BringBackOurGirls has been near the top of the Twitter charts for 365 days. How did the campaign go viral and stay viral? Star power helped.https://p.dw.com/p/1F8E0Image: TwitterAdvertisement