Why is the MPAA training copyright police?

The MPAA is training a special group of Swedish police (with the help of the FBI) to conduct raids. These copyright police are being trained (according to Techdirt) as a response to the "botched" raid on Pirate Bay. And as that article questions, why is the MPAA even involved at all? They clearly have a bias and the FBI shouldn't be helping the MPAA. Plus, I doubt this idea of copyright police will really work.

In the UK, according to the Register, there will be about 4,500 of these "copyright police".

As recommended by December's Gowers Review of Intellectual Property, the DTI has granted Trading Standards Officers new powers under Section 107A of the Copyright, Designs and Patents Act 1988. It will also give £5m to law enforcement agencies to tackle copyright infringement.

Section 107A therefore allows authorities to enforce prohibitions against copyright. Seems to be a trend...