AMSTERDAM (AP) — Israeli fans were assaulted after a soccer game in Amsterdam by hordes of young people apparently riled up by calls on social media to target Jewish people, Dutch authorities said Friday. Five people were treated at hospitals and dozens were arrested after the attacks, which were condemned as antisemitic by authorities in Amsterdam, Israel and across Europe.Reports of antisemitic speech, vandalism and violence have been on the rise in Europe since the start of the war in Gaza, and tensions mounted in Amsterdam ahead of Thursday night’s match between the Dutch team Ajax and Maccabi Tel Aviv.Pro-Palestinian demonstrators were banned by local authorities from gathering outside the stadium, and video showed a large crowd of Israeli fans chanting anti-Arab slogans on their way to the game. Afterward, youths on scooters and on foot crisscrossed the city in search of Israeli fans, punching and kicking them and then fleeing quickly to evade police, Amsterdam Mayor Femke Halsema said.On the social media…