Abstract Purpose Scholars have expressed great hopes that social media use can foster the democratic engagement of young adults. However, this research has largely ignored non-political, entertainment-oriented uses of social media. In this essay, I theorize that social media use can significantly dampen political engagement because, by and large, young adults use social media primarily for non-political purposes, which distracts rather than mobilizes. Design/methodology/approach I illustrate this argument using aggregate level data from the U.S., Germany, Switzerland, and Japan by comparing relative voter turnout and social media use data of young adults. Findings Data suggest a so called Social Media Political Participation paradox in those countries: The gap in voter turnout between young adults and older generations has not significantly decreased, despite a skyrocketing rise of social media use on the side of young adults, and the overwhelming research evidence that social media use fosters offline political participation. Implications When trying to understand the implications of social media for democracy across the globe, entertainment-oriented content needs to be brought back in. Originality/value This essay challenges the dominant research paradigm on social media use and political participation. It urges future research to theoretically develop, describe, and empirically test a comprehensive model of how social media use has the potential to mobilize and to distract.