No doubt this post will get me labelled as some sort of fascist and supporter of police brutality, but I always find these sort of demos and violence things highly amusing (I will probably get slated for using the word "amusing" too given someone died). The thing is though; this sort of incident produces nothing but absolute crap from both sides of the political fence and I'm concerning myself with that.
On the Left, which is pretty much always the demonstrator side in these cases, there is always a tendency to watch out for "police brutality", be it a light push, to a good old-fashioned shit-kicking session. In fact, if a policeman tickled a demonstrator it would not be surprising to see some dumbass lefty whining about it.
Meanwhile, from the Right, we tend to see an instinctive bias towards defending the Police. Usually noting, quite rightly in many cases, that their job is to maintain order and if some crazy crusties intent on smashing the state go wild in the streets of London as if they're infected with the Rage virus from 28 Days Later, then the Police have to do what they can and sadly "shit happens".
Of course, what we can guarantee from this video is that whatever the IPCC decides there will be someone on the Left that screams "whitewash" from the rooftops. The Right on the other hand will argue, as noted, that the shit that happens happened.
Was the policeman with the baton a bit naughty for knocking this guy to the ground? On the face of it, just an ickle bit and he shold probably be bollocked in some way for it. Is it likely that the whack caused him to wander off and have a heart attack some minutes later? Who knows - it doesn't matter because even if it did or didn't there will still be enough that believe it did (see "whitewash" point) and boy will they shout it loudly.
Thus, the end result os this will be - as is usually the way - that the actions of one policeman will get used by those on the Left who are not necessarily violent as yet more evidence that free protest is being curtailed by creeping fascism of the state.
They'll probably do it whilst ignoring, and thereby tacitly accepting (a) the violence by their protesting peers, and (b) the creeping fascism of the state that comes in the form of certain social authoritarian engineering policies they support, such as hard-line environmentalism and other curtailments to freedom.
Likewise the actions of the many violent protesters will be held aloft by the Right, who will vocally point out the inconsistent argument that are coming from the Left. The instant charge in return from the Left will be that they're ignoring, and thereby tacitly supporting, fascistic police brutality. Right back at ya! Yaa! Boo! Etcetra etcetra. Yawn!
Whilst all this is going on the rest of the country - most of whom couldn't really give a crap about either the jolly in London involving world leaders brown-nosing Obama, or the crusty unwashed protesters ruining peoples’ ability to get to work without having to hold their breathe - will carry on about their daily lives thinking "The whole bloody lot of them are wankers aren't they?".
Plus ça change