So if one of the officers Bishop was chasing with the traffic cone had fallen over, allowing him to catch up, what would more likely have been Bishop's next action?
1. Bishop perches the cone lightly on the Copper's head, helps him back to his feet and takes a smiling selfie with him?
2. Bishop uses the cone to bash the Copper over the head or elsewhere. To assault him with it.
Given that this was a street riot rather than an open day at the local police station, I fancy it might have been option 2.
Granted, the actual assault did not happen.
And again I'm not a lawyer. But I think there was sufficient grounds for hostile intent to be accepted beyond reasonable doubt.