Free Ai Weiwei street art campaign is a "guerilla methods" of political street art protest against the PRC government's secret detention of world famous Chinese artist Ai Weiwei since April 3, 2011, organized by Hong Kong artists and art supporters, calling for the immediate release of the artist.
Michelle Obama tweeted her own portrait holding a sign reading #BringBackOurGirls and soon countless celebrities echoed this meme online. Throughout a week, this trending hashtag had been turned into a social-media supernova. The #BringBackOurGirls campaign spurred by online sharing brought the outrage against Chibok schoolgirls kidnapping to the global stage.