Amsterdam's mayor described a "pitch black" day on Friday (Nov 9) after violence between Maccabi Tel Aviv fans and men on scooters in several areas of the city in the early hours. While US President Joe Biden said the "anti-Semitic" attacks were "despicable", the Palestinian foreign ministry condemned "anti-Arab chants by the Israelis and the attack against the Palestinian flag in Amsterdam". Here's what we know about the clashes, which sparked outrage around the world. WEDNESDAY: TROUBLE