A 'flash mob' style gathering (?) had a water fight, chanted 'Black Lives Matter' and then stabbed a policeman and looted a McDonalds.
This was in London, by the way, not some ridiculous lala land like 'Merika.
If there was but one piece of the story I could grasp, I could use that as a frame upon which to hang the other elements, and thereby arrive at some understanding; unortunately, the whole thing smacks of insanity, so I'm lost.