Not at all, you've made a really good point! I agree that this individual's actions reflect terribly on the Police as a whole, but I think in reality not every member of the force would have behaved in such an appalling manner.
Don't get me wrong, I'm not excusing his actions at all - I'm afraid I'm a very old fashioned girl who believes men should never, in any circumstance, hit women, police badges/provocation aside! Honestly though, I don't think this one idiot's behaviour is indicative of the average policeman's response to that particular situation. A hand up, palm facing the protestor and a firm tone asking her to step back is ALL that was required here, and the fact he failed in that simple task is reprehensible - THAT'S what makes it shocking.