Public mourning and collective displays of solidarity after terrorist violence are established cultural practices that bring people together at times of tragedy and loss. While it remains common to gather at the site of tragedy, to construct temporary memorials of candles and flowers in memory of the victims and to come together as community, mediated practices of commemoration have become equally important. Sharing solidarity symbols facilitating connective participation is one of the most prevalent and visible ways of joining in public mourning in digital spaces. One of the most popular solidarity symbols to date is# JeSuisCharlie, created after the Charlie Hebdo attack in Paris, 2015. It has since inspired numerous renditions, including# JeSuisMuslim that emerged after the Christchurch mosque attacks in March, 2019. This media-ethnographic study focuses on solidarity symbols circulating on Twitter after four terrorist attacks: Paris in January, 2015, and again in November, Beirut in November, 2015, and Christchurch in March, 2019. The study draws on Appraisal analysis to examine the interpersonal dimension of solidarity symbols, specifically, how stance as interpersonal orientation is constructed in solidarity symbols. When the normative reading of solidarity symbols as vehicles for alignment and solidarity is interrupted, they are experienced as alienating or excluding. Approaching solidarity symbols as vehicles for evaluative practices of stance-taking, the paper explores how solidarity symbols function, first, as bonding icons able to construct affective alignment and a sense of community, and second, how these bonding icons construct the reader as aligned with specific ideology, contributing