Eurovision protesters in Malmo, Sweden, object to Israel’s Eden Golan

MALMO, Sweden — Thousands of demonstrators waving Palestinian flags flooded Sweden’s third-largest city Thursday to call for a cease-fire in Gaza and protest Israel’s participation in the Eurovision Song Contest here this week.The annual celebration of music and kitsch, watched by more than 150 million people, is often enmeshed in politics. But some observers say this is the most politically charged edition of the contest in its 68-year history.