I am concerned about the delusional stability of that rule. But cant argue if it is correct, as to whose right calf tape measure tattoo caught the fish.

"If"?

Yes! Decry his superior intellect aloud good sir, shout it until the world is aware.

And yet do we see any burning cars at this protest. Yes, "protest"... not "riot".

Once again @guest_ marvelous reply, but I do hate you for always getting to the common point I would raise before I even read the OC. Onward regardless...
Police, like most civil employees are salary paid, meaning as long as they do their 40 hours a week, they're paid the same if the trian in a police station ... or outside Parliament. Learning how to quietly and accurately film a protest can either be done whilst dodging flying, flaming bottles.. or lewd glances of persons slightly miffed at your presence. I'd rather Evidence Collection practice on you all especially if, God forbid... someone started shooting at protesters, the building, or police. As guest_ noted, the evidence, once collected an in existence can be used to vindicate the innocent, convict the guilty, and train the future responders.