“…Young people are considered and judged by their peers on a daily basis through the signs and content they display online (Aubert and Haroche, 2011). Their presentations of ecological commitment can be found at different scales, both public and individual (Granjon, 2017), and they take ostentatious, silent, personalized, intimate or even invisible forms that would escape all expressions in public and physical spaces (Becquet, 2009; Pleyers and Capitaine, 2016). The issue of changes in militant commitment practices in physical spaces has already been addressed (Ion, 1997; Marsh et al, 2007).…”