Protests by students demanding universities sever ties with Israel over the Gaza war spread across western Europe on Tuesday, sparking clashes and dozens of fresh arrests. Students at various European universities, inspired by ongoing demonstrations at US campuses, have been occupying halls and facilities, demanding an end to partnerships with Israeli institutions because of Israel’s punishing assault on Gaza. Several hundred protesters resumed a demonstration around the University of Amsterdam campus, where police the previous night were filmed baton-charging them and smashing up their tents …