Easy 10
Brain dead MUG SHEEP
I wouldn't expect a Police Office to act like an angel is such a situation and I accept that these days protesters are far more savvy and know exactly which pressure points to push. I can imagine in certain situations it can be difficult to distinguish between peaceful and aggressive protesting.
However, if you can't distinguish between an aggressive protester and a drunk newspaper salesman or an aggressive protester and a BBC cameraman, than frankly you aren't up to job.
If you are susceptible to violent behaviour (that cannot be excused as self defence or the last resort in controlling a crowd) then you are a liability to the credibility of the Police Force and a danger to the general public.
No excuse, he did it, he was out of order and he's been caught out. The Police themselves have assisted towards that conclusion.
There is absolutely no other credible interpretation of the events.
Perfect summising, not much more to add to that.
From the footage, the guy was pumped up, out of control, and indiscriminately twatting anything in his path. Always remember:
Serve the public trust
Protect the innocent
Uphold the law
That officer would have been kicked out of OCP, no question. Now he should be on trial for manslaughter.