Still the same question

The Independent Police Conduct authority has found another case where police used excessive force in making an arrest:

A police officer broke a woman’s arm with a baton before dragging her out of her car by the hair following a chase.

The Independent Police Conduct Authority has found the officer’s use of force was “excessive” and his actions were “unnecessary”.

Naturally, the police deny everything and claim the use of force was appropriate. But if anyone else had done it, they'd be slapping them with charges of assault with a weapon and injuring with intent. And so we're left asking the same question: why does the law apply to us and not to them? And how can a body which purports to be above the law have any credibility in enforcing it?