Whilst there maybe more to come out, I think people were right to reserve judgement on the situation until more context was given. Unless more evidence comes to light, or videos are subsequently discredited, I think the so-called "victims" were very violent and the police were right to use tasers to subdue them. However, I take exception to an officer kicking and attempting to stamp on the head of an individual who was prone and not clearly a threat (unless they prove otherwise).
Did they deserve it? Maybe. Would I have done it in the same situation? Probably. But Police are to be held to a higher standard than Joe Public like me. Dispassionately judging a situation and subduing a suspect to allow the justice system to deal with them, the stamp looked like retribution to me, for which I have a degree of sympathy but do not condone, knowing I sit in an Ivory tower.
To their lawyer and the "victims" claiming racism, I almost laugh, as it's such a far cry away from the actual racism still pervasive in our society, with it being a case of percentages rather than a simple "yes or no", it almost debases the very valid claims in the wide context. The UK has a problem with racism because it still exists, I am sure we all agree. This incident is not an example, the offenders look like dicks, the police probably overstepped the boundaries of the "rules of engagement" and investigations into wrong-doings need to be conducted on all sides.