Bachelor Thesis from the year 2016 in the subject Communications - Public Relations, Advertising, Marketing, Social Media, grade: A-, University of the Arts London - London College of Communication, course: BA (Hons) Graphic and Media Design, language: English, abstract: What is the influence of social media on graffiti? Through this thesis I try to answer that, basing it on Portuguese train bombing, an illegal form of graffiti performed on trains and subway cars. In order to explore this subject further I have looked at diverse fonts and forms of research, conducting four interviews, reading books about the matters, watching documentaries, exploring social networks and reading different articles. At first, I explore the history of graffiti on a worldwide context and then in the Portuguese context. The next two chapters explain what has social media given and taken away from graffiti. Ending then in a brief analysis of everything I refer through the main body of this thesis and speculating about the future of graffiti.