LAUSR

Extant literature suggests that racism is associated with difficult emotional reactions and feelings of social disconnect among White individuals. These feelings of social disconnect may be particularly salient in today's digital era in which racism against racial minority individuals is conveniently and frequently witnessed via online platforms. Thus, we examined whether witnessing racism online may be associated with feelings of loneliness among White emerging adults. We also tested whether anti-racism advocacy buffered loneliness given its potential for relationship building and community organizing to promote racial justice and equity. Using data from 227 White emerging adults (Mage  = 20.86, SD = 4.82), we conducted a latent moderated structural equation modeling to test individual and institutional anti-racism advocacy as moderators in the link between witnessing racism online (racial victimization of racial minority individuals in online interactions and online content on cultural devaluation/systemic racism against racial minority individuals) and loneliness. Greater exposure to online content on systemic racism and cultural devaluation of racial minority groups significantly predicted greater loneliness. Engagement in individual anti-racism advocacy (mean to high levels) buffered this link. White allies must engage in anti-racism practice to address racism in our society, and our findings advance our understanding of the associated psychosocial costs. Implications for research and practice are discussed.