Citizens locally and globally are increasingly committing to social actions (climate change, anti-harassment, anti-corruption, etc). These actions can take many forms and are enhanced by digital technologies (social networks, geotagging, open collaboration spaces, etc.). In these citizen-enhanced actions participants are highly motivated, self-organised and committed to the common goal; yet the potential is very little explored in the language education sector, where often motivation to learn a foreign language may be missing. This Challenge is about social participation in language education.