Swedish climate activist Greta Thunberg was detained by Copenhagen police as she participated in a pro-Palestinian protest in the Danish capital on Wednesday. The 21-year-old activist was shown being taken away by police on photos in the Politiken and Ekstra Bladet newspapers and in a video posted by the protest organizers on Instagram. She was wearing a Palestinian shawl at the time. Fellow protesters called out repeatedly: “You are not alone,” as she was taken away from the protest in front of an administrative building of Copenhagen University, which lies in the centre of the city close to …