Britain’s Prime Minister Keir Starmer said in an interview broadcast on Saturday that banning some pro-Palestinian marches could be justified, especially when they call for the intifada to spread.

Labour leader Starmer is under pressure to act after a spate of antisemitic incidents, including this week, when two men were stabbed in the north London suburb of Golders Green, which is home to a large Jewish community.

A 45-year-old British national who was born in Somalia was remanded in custody...