BERLIN, GERMANY - DECEMBER 10: A participant holds a banner bearing an image of recently executed Iranian protester, Mohsen Shekari, as people protest in solidarity with the ongoing demonstrations in Iran and against the Islamic Republic's regime in front of the Brandenburg Gate on December 10, 2022 in Berlin, Germany. The demonstration is taking place following the execution of Iranian protester Mohsen Shekari, who reportedly took part in protests sparked by the death of Mahsa Amini after her arrest by Iranian authorities in September. Hundreds have died in Iran from heavy-handed tactics by police against protesters. (Photo by Omer Messinger/Getty Images)