OK, well I wasn't at the front of it all so I don't know first hand.
Problem with such a situation is that the aggression from some protesters feeds into the police defending their position. Especially if they see their fellow colleagues getting smacked about by some idiots.
The Met were...
I'm not surprised they were heavy handed.
I got to Millbank just as people started storming the building (which for one entrance was very comical as it was a revolving door, so they had to go in one by one!). A hundred or so protesters had got into the lobby, a sofa had been pulled out and...