The rise of social media platforms over the past two decades has reshaped how citizens engage with public life, political discourse, and democratic processes. This paper examines the theoretical and empirical dimensions of that reshaping through a review of existing scholarship in political communication, media studies, and democratic theory. Drawing on Habermasian public sphere theory, digital democracy frameworks, and political communication research, the paper traces how social media simultaneously opened new channels for civic participation and introduced structural problems that now test the foundations of deliberative democracy. These problems include algorithmic filter bubbles, political polarization, coordinated misinformation campaigns, and the growing concentration of communicative power in a small number of private platforms. The paper also considers how networked social movements have used these platforms for collective action, from the Arab Spring to more recent protest waves, and what those movements reveal about the limits and possibilities of platform-mediated politics. The analysis concludes that social media has not simply disrupted democratic participation but has fundamentally altered its conditions, requiring scholars, citizens, and policymakers to revisit foundational assumptions about deliberation, representation, and the public good.
George Kiptoo Ouma (Tue,) studied this question.