With the diffusion of social network sites and applications, social media have become one of the most popular Internet (communication) services. Most of the information exchange that occurs on these social networking sites is not only personal information or entertainment, but also new ways to stimulate citizen engagement in politics because of the fast flowing of videos and news reports. They are incorporating more political issues and public affairs into these social media platforms. The ‘Umbrella Movement’, which triggered global attention, is a typical case that illustrates the importance of social media in the social movement. During the entire 2014 campaign, social media and social media platforms played a key role in providing students a new way to obtain immediate information from different perspectives and allowing some student leaders to announce strategies or directions to other students or participants in the movement. In an era when students’ time and attention are increasingly directed towards social media and social media platforms such as Facebook and YouTube, these platforms allow students to obtain political information without needing the intermediate role of mass media. Reactions, feedback and conversations generated online are stimulating and facilitate social participation.