Mr Falter said: “For over a year now the police have turned a blind eye or even looked for reasons not to arrest or prosecute extremists who target Jews.

“Our charity has had to work non-stop to effectively do the police’s job for them, identify offenders and bring private prosecutions ourselves when we can’t convince the authorities to act.

“Recent events show that the police have the capacity and willingness to act when they want, but they too often devote their resources to nonsense

“It is outrageous that at a time of record anti-Semitism, Jews must enforce the law themselves, while those who stand up to anti-Semitism face arrest and police harassment.”

Last week, Essex Police said it had dropped its investigation into Allison Pearsonjournalist The Telegraph, for an alleged hate crime.

Pearson, an award-winning writer, is being investigated for alleged racial hatred in a social media post made last November.