Well, the idea does not surprise me but the extend of the problem does. The channel four documentary maker, In The new anti-Semitism: How the Left reversed history to bring Judaism under attack Richard Littlejohn writes:

Ever since 9/11 I've detected an increase in anxiety among Jewish friends and neighbours in my part of North London. As I've always argued: just because you're paranoid, it doesn't mean they're not out to get you.

When I went to address a ladies' charity lunch at a synagogue in Finchley, I was astonished at the level of security. You don't expect to see bouncers in black bomber jackets on the door at a place of worship.

I soon discovered this wasn't unusual. Nor is it confined to London. The Chief Constable of Greater Manchester, Mike Todd, took me out on patrol with his officers and members of the Community Security Trust, which provides protection for the Jewish community.

These patrols are mounted every Friday night following a series of unprovoked attacks on Jews on their way to synagogue. We passed a care home surrounded by barbed wire.

At the King David School, there are high fences, floodlights, CCTV cameras and fulltime guards. It was the kind of security you associate with a prison.

They're even installing bombproof windows in many prominent Jewish institutions and running evacuation drills.

This sounded to me like Cold War panic. Surely it's all a bit over the top? Far from it, said Todd.

'We know that people carry out hostile reconnaissance. You do know that there will be attacks potentially and so what we're trying to do is make it a hostile environment to those people who want to engage in anti-Semitic attacks.'

Thanks to a man of conscience and the new technology, it is possible to watch the program in 6 installments. Here is the first

and the fifth;