Reports out of Amsterdam Thursday night were bone-chilling: Gangs of black-clad young men, Arab Muslims by all eyewitness accounts, essentially hunting down and assaulting Jews, 80 years after Anne Frank was discovered in a local attic and condemned to Bergen-Belsen.

At a Friday morning press conference, Amsterdam mayor Femke Halsema described marauding thugs on scooters who “criss-crossed the city looking for football club Maccabi Tel Aviv supporters.” Maccabi fans had travelled to Amsterdam to see Israel’s most-decorated team take on Ajax, the Netherlands’ most-decorated team, in the UEFA Europa League.