Various police officers are acknowledged to have committed perjury, furthermore, despite this being found out, someone somewhere chose not to prosecute them.
The police used excessive force and did not follow protocol, this was acknowledged in other court cases but has never been formally investigated or charges brought.
Senior police officers (and maybe government officials) are acknowledged to have been involved in the excessive force and breaches of protocol - none were formally investigated or charged.
The reason the miners were acquitted is because they had to defend themselves against the excessive violence by the police, the BBC reversed the order of footage to make it look like the miners attacked first.
Ignoring all this sends out the wrong message, if police step out of line they should expect to be prosecuted, ignoring these offences encourages the bad eggs and forces the better police officers turn a blind eye.
Its funny that other old offences get dug up and prosecuted even when there is no hard evidence, no reliable independent witnesses and only amounts to one persons word against another's based on vague memories.
The police need to know they have to be squeaky clean, which is not my opinion of out own force.
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell
When the debate is lost, slander becomes the tool of the loser. Socrates