Gemma Tarafa (Barcelona, ​​1971) has been the coordinator of Comuns since November, along with Candela López. She arrives after serving alongside Ada Colau as a councilor at Barcelona City Council since 2019.

Over 210,000 Barcelona residents suffer intensely from noise pollution in the city (with severe psychological, emotional and social effects) and over 60,000 have serious sleep disorders due to exposure to traffic. Noise is, in fact, the second environmental factor that has the greatest impact on the population's health after air pollution, according to data from the Barcelona Public Health Agency, which also warns that traffic is responsible for around 300 new cases of ischemic heart disease and 3% of deaths: about thirty each year in Barcelona.