The number of reported attacks on British Jews have doubled over the last month, according to policy and community groups.
More than 100 hate incidents have been recorded in Britain, including a Rabbi attacked by four youths outside a Jewish boarding school in Gateshead.
Other reports include a group of Asian men driving through a Jewish area of Greater Manchester, shouting “Heil Hitler” and hurling missiles at pedestrians.
Jewish groups have also tracked an increase in the use of the words "dirty Jew" on Twitter.
A spokesman for a Jewish organisation, the Community Security Trust (CST), said the incidents are well over double the average and are linked to the conflict in Gaza.
More top news
New guidance on when a "major incident" can be declared by hospitals has been criticised by Labour in a furious showdown in the Commons.
UK to be "very cold indeed" over the coming days due to bitter northeasterly winds.