"It seems the UK police are taking their training from their trigger-happy American counterparts."
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Aw stuff it! Everything that goes wrong anywhere in the world is America's fault, I guess. How logical!

For your information, Stigweard, American police try to avoid shooting, and when a gun is fired, we take it very seriously. There are many officers who have never fired a gun.

The bullet doesn't even have to hit someone. An officer simply firing a gun is a matter for investigation.