Aka is an artivist, social leader, rapper, urban land rescuer and gardening expert from Medellín, Colombia. He has been active in organizing and leading grassroots projects that have involved hundreds of young people across Medellín, into artivism through gardening, lyric writing and music making. Maria Lindmäe is a postdoctoral researcher at Pompeu Fabra University. Her current work focuses on the everyday practices of inclusion and exclusion of street markets in Spain. Her research interests include sound geographies, public space and creative place-making practices in Spain and Colombia.