The amazing thing about Britain's slow-motion national suicide is that so many seemingly sensible people attack and damage their own homeland, without having a clue about what they are doing.

Here's an example. Last month, a group of 13-year-olds in a school in East Anglia were learning about the Spanish Armada, that pivotal moment in our island story.

Then they were handed a worksheet. I have a copy of it, if you don't believe me.

It was downloaded from a website called schoolhistory.co.uk which is widely used by teachers so the same thing has quite possibly been going on in a school near you.

"You are a Spanish sailor about to embark in the Spanish Armada," said the worksheet. "Draw an anti-English poster to show all the reasons why you are invading the country."

It also asked for a "spider diagram of at least four reasons why Spain was angry enough with England to want to invade".
The school head and the teacher involved (I shall not name them because I think they're clueless rather than anti-British) claim this stuff is in line with the National Curriculum.

They didn't see anything wrong with it.

Well, try substituting "Germany" for "Spain", "the Blitz" for "Armada", and "Luftwaffe airman" for "Spanish sailor" and you might get my drift.