I think you have misunderstood the purpose. There is no need for a collection of "the opposite" of this, whatever that would even mean. Police have arresting p

I think you have misunderstood the purpose. There is no need for a collection of "the opposite" of this, whatever that would even mean. Police have arresting power, so if non-police assault them they will simply arrest or kill them immediately, largely without the possibility of facing any consequences. Thousands have been arrested at protests in the last couple of months. The non-police public have no such powers, and in fact even with video evidence will almost never see justice for police brutality. There is a huge violence problem here and it lies almost entirely on one side.